Home / 10,513.20-15,767.12-3,115.93

Finding the Fourth Proportional to 10,513.20, 15,767.12 and 3,115.93

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Solution

The fourth proportional to 10,513.20, 15,767.12 and 3,115.93 is: 4,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513.20 : 15,767.12 = 3,115.93 : x
  2. Step 2: Convert to fraction form
    10,513.20/15,767.12 = 3,115.93/x
  3. Step 3: Cross multiply
    10,513.20x = 15,767.12 × 3,115.93
  4. Step 4: Simplify right side
    10,513.20x = 49,129,275.74
  5. Step 5: Solve for x
    x = 49,129,275.74/10,513.20
  6. Step 6: Final answer
    x = 4,673.10

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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.