Home / 12,020,420.28-18,030,630.42-7,282,659

Finding the Fourth Proportional to 12,020,420.28, 18,030,630.42 and 7,282,659

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Solution

The fourth proportional to 12,020,420.28, 18,030,630.42 and 7,282,659 is: 10,923,988.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020,420.28 : 18,030,630.42 = 7,282,659 : x
  2. Step 2: Convert to fraction form
    12,020,420.28/18,030,630.42 = 7,282,659/x
  3. Step 3: Cross multiply
    12,020,420.28x = 18,030,630.42 × 7,282,659
  4. Step 4: Simplify right side
    12,020,420.28x = 131,310,932,903,886.80
  5. Step 5: Solve for x
    x = 131,310,932,903,886.80/12,020,420.28
  6. Step 6: Final answer
    x = 10,923,988.50

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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.