Home / 28,508.70-39,338.58-15,760.17

Finding the Fourth Proportional to 28,508.70, 39,338.58 and 15,760.17

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Solution

The fourth proportional to 28,508.70, 39,338.58 and 15,760.17 is: 21,747.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.70 : 39,338.58 = 15,760.17 : x
  2. Step 2: Convert to fraction form
    28,508.70/39,338.58 = 15,760.17/x
  3. Step 3: Cross multiply
    28,508.70x = 39,338.58 × 15,760.17
  4. Step 4: Simplify right side
    28,508.70x = 619,982,708.36
  5. Step 5: Solve for x
    x = 619,982,708.36/28,508.70
  6. Step 6: Final answer
    x = 21,747.14

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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.