Home / 21,532.52-29,715-11,972.54

Finding the Fourth Proportional to 21,532.52, 29,715 and 11,972.54

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Solution

The fourth proportional to 21,532.52, 29,715 and 11,972.54 is: 16,522.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,532.52 : 29,715 = 11,972.54 : x
  2. Step 2: Convert to fraction form
    21,532.52/29,715 = 11,972.54/x
  3. Step 3: Cross multiply
    21,532.52x = 29,715 × 11,972.54
  4. Step 4: Simplify right side
    21,532.52x = 355,764,026.10
  5. Step 5: Solve for x
    x = 355,764,026.10/21,532.52
  6. Step 6: Final answer
    x = 16,522.17

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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.