Home / 21,329.87-29,433.17-11,899.04

Finding the Fourth Proportional to 21,329.87, 29,433.17 and 11,899.04

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Solution

The fourth proportional to 21,329.87, 29,433.17 and 11,899.04 is: 16,419.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.87 : 29,433.17 = 11,899.04 : x
  2. Step 2: Convert to fraction form
    21,329.87/29,433.17 = 11,899.04/x
  3. Step 3: Cross multiply
    21,329.87x = 29,433.17 × 11,899.04
  4. Step 4: Simplify right side
    21,329.87x = 350,226,349.74
  5. Step 5: Solve for x
    x = 350,226,349.74/21,329.87
  6. Step 6: Final answer
    x = 16,419.53

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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.