Home / 11,127.71-15,363.41-9,930.65

Finding the Fourth Proportional to 11,127.71, 15,363.41 and 9,930.65

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Solution

The fourth proportional to 11,127.71, 15,363.41 and 9,930.65 is: 13,710.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,127.71 : 15,363.41 = 9,930.65 : x
  2. Step 2: Convert to fraction form
    11,127.71/15,363.41 = 9,930.65/x
  3. Step 3: Cross multiply
    11,127.71x = 15,363.41 × 9,930.65
  4. Step 4: Simplify right side
    11,127.71x = 152,568,691.26
  5. Step 5: Solve for x
    x = 152,568,691.26/11,127.71
  6. Step 6: Final answer
    x = 13,710.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.