Home / 15,620.71-21,534.15-11,136.68

Finding the Fourth Proportional to 15,620.71, 21,534.15 and 11,136.68

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Solution

The fourth proportional to 15,620.71, 21,534.15 and 11,136.68 is: 15,352.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.71 : 21,534.15 = 11,136.68 : x
  2. Step 2: Convert to fraction form
    15,620.71/21,534.15 = 11,136.68/x
  3. Step 3: Cross multiply
    15,620.71x = 21,534.15 × 11,136.68
  4. Step 4: Simplify right side
    15,620.71x = 239,818,937.62
  5. Step 5: Solve for x
    x = 239,818,937.62/15,620.71
  6. Step 6: Final answer
    x = 15,352.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.