Home / 23,100.20-31,877.68-13,671.80

Finding the Fourth Proportional to 23,100.20, 31,877.68 and 13,671.80

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Solution

The fourth proportional to 23,100.20, 31,877.68 and 13,671.80 is: 18,866.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,100.20 : 31,877.68 = 13,671.80 : x
  2. Step 2: Convert to fraction form
    23,100.20/31,877.68 = 13,671.80/x
  3. Step 3: Cross multiply
    23,100.20x = 31,877.68 × 13,671.80
  4. Step 4: Simplify right side
    23,100.20x = 435,825,265.42
  5. Step 5: Solve for x
    x = 435,825,265.42/23,100.20
  6. Step 6: Final answer
    x = 18,866.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.