Home / 20,663.20-31,002.90-7,516.90

Finding the Fourth Proportional to 20,663.20, 31,002.90 and 7,516.90

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Solution

The fourth proportional to 20,663.20, 31,002.90 and 7,516.90 is: 11,278.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.20 : 31,002.90 = 7,516.90 : x
  2. Step 2: Convert to fraction form
    20,663.20/31,002.90 = 7,516.90/x
  3. Step 3: Cross multiply
    20,663.20x = 31,002.90 × 7,516.90
  4. Step 4: Simplify right side
    20,663.20x = 233,045,699.01
  5. Step 5: Solve for x
    x = 233,045,699.01/20,663.20
  6. Step 6: Final answer
    x = 11,278.30

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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.