Home / 20,373.72-30,562.20-8,687.04

Finding the Fourth Proportional to 20,373.72, 30,562.20 and 8,687.04

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Solution

The fourth proportional to 20,373.72, 30,562.20 and 8,687.04 is: 13,031.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,373.72 : 30,562.20 = 8,687.04 : x
  2. Step 2: Convert to fraction form
    20,373.72/30,562.20 = 8,687.04/x
  3. Step 3: Cross multiply
    20,373.72x = 30,562.20 × 8,687.04
  4. Step 4: Simplify right side
    20,373.72x = 265,495,053.89
  5. Step 5: Solve for x
    x = 265,495,053.89/20,373.72
  6. Step 6: Final answer
    x = 13,031.25

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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.