Home / 26,220.68-39,331.02-12,379.40

Finding the Fourth Proportional to 26,220.68, 39,331.02 and 12,379.40

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Solution

The fourth proportional to 26,220.68, 39,331.02 and 12,379.40 is: 18,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,220.68 : 39,331.02 = 12,379.40 : x
  2. Step 2: Convert to fraction form
    26,220.68/39,331.02 = 12,379.40/x
  3. Step 3: Cross multiply
    26,220.68x = 39,331.02 × 12,379.40
  4. Step 4: Simplify right side
    26,220.68x = 486,894,428.99
  5. Step 5: Solve for x
    x = 486,894,428.99/26,220.68
  6. Step 6: Final answer
    x = 18,569.10

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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.