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Finding the Fourth Proportional to 20,332.56, 30,500.40 and 7,000.08

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Solution

The fourth proportional to 20,332.56, 30,500.40 and 7,000.08 is: 10,500.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.56 : 30,500.40 = 7,000.08 : x
  2. Step 2: Convert to fraction form
    20,332.56/30,500.40 = 7,000.08/x
  3. Step 3: Cross multiply
    20,332.56x = 30,500.40 × 7,000.08
  4. Step 4: Simplify right side
    20,332.56x = 213,505,240.03
  5. Step 5: Solve for x
    x = 213,505,240.03/20,332.56
  6. Step 6: Final answer
    x = 10,500.66

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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.