Home / 21,125.62-29,167.11-13,574.86

Finding the Fourth Proportional to 21,125.62, 29,167.11 and 13,574.86

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Solution

The fourth proportional to 21,125.62, 29,167.11 and 13,574.86 is: 18,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.62 : 29,167.11 = 13,574.86 : x
  2. Step 2: Convert to fraction form
    21,125.62/29,167.11 = 13,574.86/x
  3. Step 3: Cross multiply
    21,125.62x = 29,167.11 × 13,574.86
  4. Step 4: Simplify right side
    21,125.62x = 395,939,434.85
  5. Step 5: Solve for x
    x = 395,939,434.85/21,125.62
  6. Step 6: Final answer
    x = 18,742.15

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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.