Home / 20,708.76-31,062.48-12,332.72

Finding the Fourth Proportional to 20,708.76, 31,062.48 and 12,332.72

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Solution

The fourth proportional to 20,708.76, 31,062.48 and 12,332.72 is: 18,498.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.76 : 31,062.48 = 12,332.72 : x
  2. Step 2: Convert to fraction form
    20,708.76/31,062.48 = 12,332.72/x
  3. Step 3: Cross multiply
    20,708.76x = 31,062.48 × 12,332.72
  4. Step 4: Simplify right side
    20,708.76x = 383,084,868.35
  5. Step 5: Solve for x
    x = 383,084,868.35/20,708.76
  6. Step 6: Final answer
    x = 18,498.69

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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.