Home / 21,440.97-29,590.29-12,487.92

Finding the Fourth Proportional to 21,440.97, 29,590.29 and 12,487.92

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Solution

The fourth proportional to 21,440.97, 29,590.29 and 12,487.92 is: 17,234.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.97 : 29,590.29 = 12,487.92 : x
  2. Step 2: Convert to fraction form
    21,440.97/29,590.29 = 12,487.92/x
  3. Step 3: Cross multiply
    21,440.97x = 29,590.29 × 12,487.92
  4. Step 4: Simplify right side
    21,440.97x = 369,521,174.30
  5. Step 5: Solve for x
    x = 369,521,174.30/21,440.97
  6. Step 6: Final answer
    x = 17,234.35

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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.