Home / 10,115.32-15,175.02-4,271.92

Finding the Fourth Proportional to 10,115.32, 15,175.02 and 4,271.92

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Solution

The fourth proportional to 10,115.32, 15,175.02 and 4,271.92 is: 6,408.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.32 : 15,175.02 = 4,271.92 : x
  2. Step 2: Convert to fraction form
    10,115.32/15,175.02 = 4,271.92/x
  3. Step 3: Cross multiply
    10,115.32x = 15,175.02 × 4,271.92
  4. Step 4: Simplify right side
    10,115.32x = 64,826,471.44
  5. Step 5: Solve for x
    x = 64,826,471.44/10,115.32
  6. Step 6: Final answer
    x = 6,408.74

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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.