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Finding the Fourth Proportional to 20,358.56, 30,542.88 and 6,507.56

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Solution

The fourth proportional to 20,358.56, 30,542.88 and 6,507.56 is: 9,762.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.56 : 30,542.88 = 6,507.56 : x
  2. Step 2: Convert to fraction form
    20,358.56/30,542.88 = 6,507.56/x
  3. Step 3: Cross multiply
    20,358.56x = 30,542.88 × 6,507.56
  4. Step 4: Simplify right side
    20,358.56x = 198,759,624.17
  5. Step 5: Solve for x
    x = 198,759,624.17/20,358.56
  6. Step 6: Final answer
    x = 9,762.95

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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.