Home / 21,392.31-29,521.49-11,962.70

Finding the Fourth Proportional to 21,392.31, 29,521.49 and 11,962.70

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Solution

The fourth proportional to 21,392.31, 29,521.49 and 11,962.70 is: 16,508.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.31 : 29,521.49 = 11,962.70 : x
  2. Step 2: Convert to fraction form
    21,392.31/29,521.49 = 11,962.70/x
  3. Step 3: Cross multiply
    21,392.31x = 29,521.49 × 11,962.70
  4. Step 4: Simplify right side
    21,392.31x = 353,156,728.42
  5. Step 5: Solve for x
    x = 353,156,728.42/21,392.31
  6. Step 6: Final answer
    x = 16,508.58

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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.