Home / 21,472.31-29,639.85-12,522.62

Finding the Fourth Proportional to 21,472.31, 29,639.85 and 12,522.62

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Solution

The fourth proportional to 21,472.31, 29,639.85 and 12,522.62 is: 17,285.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.31 : 29,639.85 = 12,522.62 : x
  2. Step 2: Convert to fraction form
    21,472.31/29,639.85 = 12,522.62/x
  3. Step 3: Cross multiply
    21,472.31x = 29,639.85 × 12,522.62
  4. Step 4: Simplify right side
    21,472.31x = 371,168,578.41
  5. Step 5: Solve for x
    x = 371,168,578.41/21,472.31
  6. Step 6: Final answer
    x = 17,285.92

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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.