Home / 20,708.96-31,063.43-5,126.58

Finding the Fourth Proportional to 20,708.96, 31,063.43 and 5,126.58

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Solution

The fourth proportional to 20,708.96, 31,063.43 and 5,126.58 is: 7,689.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.96 : 31,063.43 = 5,126.58 : x
  2. Step 2: Convert to fraction form
    20,708.96/31,063.43 = 5,126.58/x
  3. Step 3: Cross multiply
    20,708.96x = 31,063.43 × 5,126.58
  4. Step 4: Simplify right side
    20,708.96x = 159,249,158.97
  5. Step 5: Solve for x
    x = 159,249,158.97/20,708.96
  6. Step 6: Final answer
    x = 7,689.87

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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.