Home / 28,356.68-42,491.91-13,545.20

Finding the Fourth Proportional to 28,356.68, 42,491.91 and 13,545.20

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Solution

The fourth proportional to 28,356.68, 42,491.91 and 13,545.20 is: 20,297.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.68 : 42,491.91 = 13,545.20 : x
  2. Step 2: Convert to fraction form
    28,356.68/42,491.91 = 13,545.20/x
  3. Step 3: Cross multiply
    28,356.68x = 42,491.91 × 13,545.20
  4. Step 4: Simplify right side
    28,356.68x = 575,561,419.33
  5. Step 5: Solve for x
    x = 575,561,419.33/28,356.68
  6. Step 6: Final answer
    x = 20,297.21

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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.