Home / 20,331.30-30,489.36-7,000.57

Finding the Fourth Proportional to 20,331.30, 30,489.36 and 7,000.57

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Solution

The fourth proportional to 20,331.30, 30,489.36 and 7,000.57 is: 10,498.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.30 : 30,489.36 = 7,000.57 : x
  2. Step 2: Convert to fraction form
    20,331.30/30,489.36 = 7,000.57/x
  3. Step 3: Cross multiply
    20,331.30x = 30,489.36 × 7,000.57
  4. Step 4: Simplify right side
    20,331.30x = 213,442,898.94
  5. Step 5: Solve for x
    x = 213,442,898.94/20,331.30
  6. Step 6: Final answer
    x = 10,498.24

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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.