Home / 22,779.24-31,436.13-13,218.39

Finding the Fourth Proportional to 22,779.24, 31,436.13 and 13,218.39

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Solution

The fourth proportional to 22,779.24, 31,436.13 and 13,218.39 is: 18,241.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,779.24 : 31,436.13 = 13,218.39 : x
  2. Step 2: Convert to fraction form
    22,779.24/31,436.13 = 13,218.39/x
  3. Step 3: Cross multiply
    22,779.24x = 31,436.13 × 13,218.39
  4. Step 4: Simplify right side
    22,779.24x = 415,535,026.43
  5. Step 5: Solve for x
    x = 415,535,026.43/22,779.24
  6. Step 6: Final answer
    x = 18,241.83

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Half scale
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Double scale
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Similar ratio
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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.