Home / 15,519.66-21,414.30-10,140.68

Finding the Fourth Proportional to 15,519.66, 21,414.30 and 10,140.68

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Solution

The fourth proportional to 15,519.66, 21,414.30 and 10,140.68 is: 13,992.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.66 : 21,414.30 = 10,140.68 : x
  2. Step 2: Convert to fraction form
    15,519.66/21,414.30 = 10,140.68/x
  3. Step 3: Cross multiply
    15,519.66x = 21,414.30 × 10,140.68
  4. Step 4: Simplify right side
    15,519.66x = 217,155,456.65
  5. Step 5: Solve for x
    x = 217,155,456.65/15,519.66
  6. Step 6: Final answer
    x = 13,992.28

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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.