Home / 13,587.40-20,381.11-3,726.75

Finding the Fourth Proportional to 13,587.40, 20,381.11 and 3,726.75

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Solution

The fourth proportional to 13,587.40, 20,381.11 and 3,726.75 is: 5,590.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.40 : 20,381.11 = 3,726.75 : x
  2. Step 2: Convert to fraction form
    13,587.40/20,381.11 = 3,726.75/x
  3. Step 3: Cross multiply
    13,587.40x = 20,381.11 × 3,726.75
  4. Step 4: Simplify right side
    13,587.40x = 75,955,283.06
  5. Step 5: Solve for x
    x = 75,955,283.06/13,587.40
  6. Step 6: Final answer
    x = 5,590.13

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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.