Home / 20,920.25-31,349.20-11,562.93

Finding the Fourth Proportional to 20,920.25, 31,349.20 and 11,562.93

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Solution

The fourth proportional to 20,920.25, 31,349.20 and 11,562.93 is: 17,327.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,920.25 : 31,349.20 = 11,562.93 : x
  2. Step 2: Convert to fraction form
    20,920.25/31,349.20 = 11,562.93/x
  3. Step 3: Cross multiply
    20,920.25x = 31,349.20 × 11,562.93
  4. Step 4: Simplify right side
    20,920.25x = 362,488,542.28
  5. Step 5: Solve for x
    x = 362,488,542.28/20,920.25
  6. Step 6: Final answer
    x = 17,327.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.