Home / 21,337.03-29,445.08-11,905.59

Finding the Fourth Proportional to 21,337.03, 29,445.08 and 11,905.59

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Solution

The fourth proportional to 21,337.03, 29,445.08 and 11,905.59 is: 16,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,337.03 : 29,445.08 = 11,905.59 : x
  2. Step 2: Convert to fraction form
    21,337.03/29,445.08 = 11,905.59/x
  3. Step 3: Cross multiply
    21,337.03x = 29,445.08 × 11,905.59
  4. Step 4: Simplify right side
    21,337.03x = 350,561,190.18
  5. Step 5: Solve for x
    x = 350,561,190.18/21,337.03
  6. Step 6: Final answer
    x = 16,429.71

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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.