Home / 13,387.78-20,079.96-3,527.92

Finding the Fourth Proportional to 13,387.78, 20,079.96 and 3,527.92

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Solution

The fourth proportional to 13,387.78, 20,079.96 and 3,527.92 is: 5,291.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.78 : 20,079.96 = 3,527.92 : x
  2. Step 2: Convert to fraction form
    13,387.78/20,079.96 = 3,527.92/x
  3. Step 3: Cross multiply
    13,387.78x = 20,079.96 × 3,527.92
  4. Step 4: Simplify right side
    13,387.78x = 70,840,492.48
  5. Step 5: Solve for x
    x = 70,840,492.48/13,387.78
  6. Step 6: Final answer
    x = 5,291.43

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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.