Home / 18,542,420.40-27,813,630.60-12,156,380.40

Finding the Fourth Proportional to 18,542,420.40, 27,813,630.60 and 12,156,380.40

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Solution

The fourth proportional to 18,542,420.40, 27,813,630.60 and 12,156,380.40 is: 18,234,570.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,542,420.40 : 27,813,630.60 = 12,156,380.40 : x
  2. Step 2: Convert to fraction form
    18,542,420.40/27,813,630.60 = 12,156,380.40/x
  3. Step 3: Cross multiply
    18,542,420.40x = 27,813,630.60 × 12,156,380.40
  4. Step 4: Simplify right side
    18,542,420.40x = 338,113,073,878,680.25
  5. Step 5: Solve for x
    x = 338,113,073,878,680.25/18,542,420.40
  6. Step 6: Final answer
    x = 18,234,570.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.