Home / 10,077.75-15,115.01-7,147.17

Finding the Fourth Proportional to 10,077.75, 15,115.01 and 7,147.17

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Solution

The fourth proportional to 10,077.75, 15,115.01 and 7,147.17 is: 10,719.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,077.75 : 15,115.01 = 7,147.17 : x
  2. Step 2: Convert to fraction form
    10,077.75/15,115.01 = 7,147.17/x
  3. Step 3: Cross multiply
    10,077.75x = 15,115.01 × 7,147.17
  4. Step 4: Simplify right side
    10,077.75x = 108,029,510.29
  5. Step 5: Solve for x
    x = 108,029,510.29/10,077.75
  6. Step 6: Final answer
    x = 10,719.61

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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.