Home / 21,432.52-29,577.09-11,872.69

Finding the Fourth Proportional to 21,432.52, 29,577.09 and 11,872.69

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Solution

The fourth proportional to 21,432.52, 29,577.09 and 11,872.69 is: 16,384.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.52 : 29,577.09 = 11,872.69 : x
  2. Step 2: Convert to fraction form
    21,432.52/29,577.09 = 11,872.69/x
  3. Step 3: Cross multiply
    21,432.52x = 29,577.09 × 11,872.69
  4. Step 4: Simplify right side
    21,432.52x = 351,159,620.67
  5. Step 5: Solve for x
    x = 351,159,620.67/21,432.52
  6. Step 6: Final answer
    x = 16,384.43

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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.