Home / 10,115.32-15,159.02-5,174.44

Finding the Fourth Proportional to 10,115.32, 15,159.02 and 5,174.44

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Solution

The fourth proportional to 10,115.32, 15,159.02 and 5,174.44 is: 7,754.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.32 : 15,159.02 = 5,174.44 : x
  2. Step 2: Convert to fraction form
    10,115.32/15,159.02 = 5,174.44/x
  3. Step 3: Cross multiply
    10,115.32x = 15,159.02 × 5,174.44
  4. Step 4: Simplify right side
    10,115.32x = 78,439,439.45
  5. Step 5: Solve for x
    x = 78,439,439.45/10,115.32
  6. Step 6: Final answer
    x = 7,754.52

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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.