Home / 20,708.92-31,063.08-5,126.56

Finding the Fourth Proportional to 20,708.92, 31,063.08 and 5,126.56

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Solution

The fourth proportional to 20,708.92, 31,063.08 and 5,126.56 is: 7,689.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.92 : 31,063.08 = 5,126.56 : x
  2. Step 2: Convert to fraction form
    20,708.92/31,063.08 = 5,126.56/x
  3. Step 3: Cross multiply
    20,708.92x = 31,063.08 × 5,126.56
  4. Step 4: Simplify right side
    20,708.92x = 159,246,743.40
  5. Step 5: Solve for x
    x = 159,246,743.40/20,708.92
  6. Step 6: Final answer
    x = 7,689.77

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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.