Home / 10,086.19-15,115.41-5,145.43

Finding the Fourth Proportional to 10,086.19, 15,115.41 and 5,145.43

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Solution

The fourth proportional to 10,086.19, 15,115.41 and 5,145.43 is: 7,711.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,086.19 : 15,115.41 = 5,145.43 : x
  2. Step 2: Convert to fraction form
    10,086.19/15,115.41 = 5,145.43/x
  3. Step 3: Cross multiply
    10,086.19x = 15,115.41 × 5,145.43
  4. Step 4: Simplify right side
    10,086.19x = 77,775,284.08
  5. Step 5: Solve for x
    x = 77,775,284.08/10,086.19
  6. Step 6: Final answer
    x = 7,711.07

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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.