Home / 21,337.02-29,445.12-11,905.61

Finding the Fourth Proportional to 21,337.02, 29,445.12 and 11,905.61

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Solution

The fourth proportional to 21,337.02, 29,445.12 and 11,905.61 is: 16,429.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,337.02 : 29,445.12 = 11,905.61 : x
  2. Step 2: Convert to fraction form
    21,337.02/29,445.12 = 11,905.61/x
  3. Step 3: Cross multiply
    21,337.02x = 29,445.12 × 11,905.61
  4. Step 4: Simplify right side
    21,337.02x = 350,561,967.90
  5. Step 5: Solve for x
    x = 350,561,967.90/21,337.02
  6. Step 6: Final answer
    x = 16,429.75

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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.