Home / 10,020.88-13,815.21-6,663.88

Finding the Fourth Proportional to 10,020.88, 13,815.21 and 6,663.88

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Solution

The fourth proportional to 10,020.88, 13,815.21 and 6,663.88 is: 9,187.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,020.88 : 13,815.21 = 6,663.88 : x
  2. Step 2: Convert to fraction form
    10,020.88/13,815.21 = 6,663.88/x
  3. Step 3: Cross multiply
    10,020.88x = 13,815.21 × 6,663.88
  4. Step 4: Simplify right side
    10,020.88x = 92,062,901.61
  5. Step 5: Solve for x
    x = 92,062,901.61/10,020.88
  6. Step 6: Final answer
    x = 9,187.11

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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.