Home / 20,708.76-31,062.72-5,126.16

Finding the Fourth Proportional to 20,708.76, 31,062.72 and 5,126.16

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Solution

The fourth proportional to 20,708.76, 31,062.72 and 5,126.16 is: 7,689.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.76 : 31,062.72 = 5,126.16 : x
  2. Step 2: Convert to fraction form
    20,708.76/31,062.72 = 5,126.16/x
  3. Step 3: Cross multiply
    20,708.76x = 31,062.72 × 5,126.16
  4. Step 4: Simplify right side
    20,708.76x = 159,232,472.76
  5. Step 5: Solve for x
    x = 159,232,472.76/20,708.76
  6. Step 6: Final answer
    x = 7,689.14

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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.