Home / 21,575.25-29,777.39-13,511.96

Finding the Fourth Proportional to 21,575.25, 29,777.39 and 13,511.96

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Solution

The fourth proportional to 21,575.25, 29,777.39 and 13,511.96 is: 18,648.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,575.25 : 29,777.39 = 13,511.96 : x
  2. Step 2: Convert to fraction form
    21,575.25/29,777.39 = 13,511.96/x
  3. Step 3: Cross multiply
    21,575.25x = 29,777.39 × 13,511.96
  4. Step 4: Simplify right side
    21,575.25x = 402,350,856.04
  5. Step 5: Solve for x
    x = 402,350,856.04/21,575.25
  6. Step 6: Final answer
    x = 18,648.72

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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.