Home / 13,587.90-20,381.85-3,727.25

Finding the Fourth Proportional to 13,587.90, 20,381.85 and 3,727.25

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Solution

The fourth proportional to 13,587.90, 20,381.85 and 3,727.25 is: 5,590.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.90 : 20,381.85 = 3,727.25 : x
  2. Step 2: Convert to fraction form
    13,587.90/20,381.85 = 3,727.25/x
  3. Step 3: Cross multiply
    13,587.90x = 20,381.85 × 3,727.25
  4. Step 4: Simplify right side
    13,587.90x = 75,968,250.41
  5. Step 5: Solve for x
    x = 75,968,250.41/13,587.90
  6. Step 6: Final answer
    x = 5,590.88

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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.