Home / 21,337.10-29,445.21-11,905.66

Finding the Fourth Proportional to 21,337.10, 29,445.21 and 11,905.66

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Solution

The fourth proportional to 21,337.10, 29,445.21 and 11,905.66 is: 16,429.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,337.10 : 29,445.21 = 11,905.66 : x
  2. Step 2: Convert to fraction form
    21,337.10/29,445.21 = 11,905.66/x
  3. Step 3: Cross multiply
    21,337.10x = 29,445.21 × 11,905.66
  4. Step 4: Simplify right side
    21,337.10x = 350,564,658.89
  5. Step 5: Solve for x
    x = 350,564,658.89/21,337.10
  6. Step 6: Final answer
    x = 16,429.82

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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.