Home / 9,900.85-13,663.17-5,424.88

Finding the Fourth Proportional to 9,900.85, 13,663.17 and 5,424.88

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Solution

The fourth proportional to 9,900.85, 13,663.17 and 5,424.88 is: 7,486.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,900.85 : 13,663.17 = 5,424.88 : x
  2. Step 2: Convert to fraction form
    9,900.85/13,663.17 = 5,424.88/x
  3. Step 3: Cross multiply
    9,900.85x = 13,663.17 × 5,424.88
  4. Step 4: Simplify right side
    9,900.85x = 74,121,057.67
  5. Step 5: Solve for x
    x = 74,121,057.67/9,900.85
  6. Step 6: Final answer
    x = 7,486.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.