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Finding the Fourth Proportional to 20,207.60, 30,304.20 and 7,060.40

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Solution

The fourth proportional to 20,207.60, 30,304.20 and 7,060.40 is: 10,588.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.60 : 30,304.20 = 7,060.40 : x
  2. Step 2: Convert to fraction form
    20,207.60/30,304.20 = 7,060.40/x
  3. Step 3: Cross multiply
    20,207.60x = 30,304.20 × 7,060.40
  4. Step 4: Simplify right side
    20,207.60x = 213,959,773.68
  5. Step 5: Solve for x
    x = 213,959,773.68/20,207.60
  6. Step 6: Final answer
    x = 10,588.08

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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.