Home / 12,104.20-18,140.10-8,637.40

Finding the Fourth Proportional to 12,104.20, 18,140.10 and 8,637.40

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Solution

The fourth proportional to 12,104.20, 18,140.10 and 8,637.40 is: 12,944.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,104.20 : 18,140.10 = 8,637.40 : x
  2. Step 2: Convert to fraction form
    12,104.20/18,140.10 = 8,637.40/x
  3. Step 3: Cross multiply
    12,104.20x = 18,140.10 × 8,637.40
  4. Step 4: Simplify right side
    12,104.20x = 156,683,299.74
  5. Step 5: Solve for x
    x = 156,683,299.74/12,104.20
  6. Step 6: Final answer
    x = 12,944.54

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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.