Home / 20,108.80-30,127.20-9,697.60

Finding the Fourth Proportional to 20,108.80, 30,127.20 and 9,697.60

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Solution

The fourth proportional to 20,108.80, 30,127.20 and 9,697.60 is: 14,529.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.80 : 30,127.20 = 9,697.60 : x
  2. Step 2: Convert to fraction form
    20,108.80/30,127.20 = 9,697.60/x
  3. Step 3: Cross multiply
    20,108.80x = 30,127.20 × 9,697.60
  4. Step 4: Simplify right side
    20,108.80x = 292,161,534.72
  5. Step 5: Solve for x
    x = 292,161,534.72/20,108.80
  6. Step 6: Final answer
    x = 14,529.04

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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.