Home / 21,385.53-29,510.03-12,432.92

Finding the Fourth Proportional to 21,385.53, 29,510.03 and 12,432.92

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Solution

The fourth proportional to 21,385.53, 29,510.03 and 12,432.92 is: 17,156.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.53 : 29,510.03 = 12,432.92 : x
  2. Step 2: Convert to fraction form
    21,385.53/29,510.03 = 12,432.92/x
  3. Step 3: Cross multiply
    21,385.53x = 29,510.03 × 12,432.92
  4. Step 4: Simplify right side
    21,385.53x = 366,895,632.47
  5. Step 5: Solve for x
    x = 366,895,632.47/21,385.53
  6. Step 6: Final answer
    x = 17,156.26

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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.