Home / 15,139.16-22,708.88-5,278.42

Finding the Fourth Proportional to 15,139.16, 22,708.88 and 5,278.42

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Solution

The fourth proportional to 15,139.16, 22,708.88 and 5,278.42 is: 7,917.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.16 : 22,708.88 = 5,278.42 : x
  2. Step 2: Convert to fraction form
    15,139.16/22,708.88 = 5,278.42/x
  3. Step 3: Cross multiply
    15,139.16x = 22,708.88 × 5,278.42
  4. Step 4: Simplify right side
    15,139.16x = 119,867,006.37
  5. Step 5: Solve for x
    x = 119,867,006.37/15,139.16
  6. Step 6: Final answer
    x = 7,917.68

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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.