Home / 13,587.40-20,381.10-3,727.54

Finding the Fourth Proportional to 13,587.40, 20,381.10 and 3,727.54

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Solution

The fourth proportional to 13,587.40, 20,381.10 and 3,727.54 is: 5,591.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.40 : 20,381.10 = 3,727.54 : x
  2. Step 2: Convert to fraction form
    13,587.40/20,381.10 = 3,727.54/x
  3. Step 3: Cross multiply
    13,587.40x = 20,381.10 × 3,727.54
  4. Step 4: Simplify right side
    13,587.40x = 75,971,365.49
  5. Step 5: Solve for x
    x = 75,971,365.49/13,587.40
  6. Step 6: Final answer
    x = 5,591.31

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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.