Home / 20,708.24-31,032.12-10,305.68

Finding the Fourth Proportional to 20,708.24, 31,032.12 and 10,305.68

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Solution

The fourth proportional to 20,708.24, 31,032.12 and 10,305.68 is: 15,443.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.24 : 31,032.12 = 10,305.68 : x
  2. Step 2: Convert to fraction form
    20,708.24/31,032.12 = 10,305.68/x
  3. Step 3: Cross multiply
    20,708.24x = 31,032.12 × 10,305.68
  4. Step 4: Simplify right side
    20,708.24x = 319,807,098.44
  5. Step 5: Solve for x
    x = 319,807,098.44/20,708.24
  6. Step 6: Final answer
    x = 15,443.47

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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.