Home / 20,724.80-31,094.40-9,046.40

Finding the Fourth Proportional to 20,724.80, 31,094.40 and 9,046.40

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Solution

The fourth proportional to 20,724.80, 31,094.40 and 9,046.40 is: 13,572.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.80 : 31,094.40 = 9,046.40 : x
  2. Step 2: Convert to fraction form
    20,724.80/31,094.40 = 9,046.40/x
  3. Step 3: Cross multiply
    20,724.80x = 31,094.40 × 9,046.40
  4. Step 4: Simplify right side
    20,724.80x = 281,292,380.16
  5. Step 5: Solve for x
    x = 281,292,380.16/20,724.80
  6. Step 6: Final answer
    x = 13,572.74

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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.