Home / 10,080.10-15,107.55-5,151.70

Finding the Fourth Proportional to 10,080.10, 15,107.55 and 5,151.70

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Solution

The fourth proportional to 10,080.10, 15,107.55 and 5,151.70 is: 7,721.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080.10 : 15,107.55 = 5,151.70 : x
  2. Step 2: Convert to fraction form
    10,080.10/15,107.55 = 5,151.70/x
  3. Step 3: Cross multiply
    10,080.10x = 15,107.55 × 5,151.70
  4. Step 4: Simplify right side
    10,080.10x = 77,829,565.34
  5. Step 5: Solve for x
    x = 77,829,565.34/10,080.10
  6. Step 6: Final answer
    x = 7,721.11

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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.