Home / 23,129.20-31,913.76-13,700.80

Finding the Fourth Proportional to 23,129.20, 31,913.76 and 13,700.80

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Solution

The fourth proportional to 23,129.20, 31,913.76 and 13,700.80 is: 18,904.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.20 : 31,913.76 = 13,700.80 : x
  2. Step 2: Convert to fraction form
    23,129.20/31,913.76 = 13,700.80/x
  3. Step 3: Cross multiply
    23,129.20x = 31,913.76 × 13,700.80
  4. Step 4: Simplify right side
    23,129.20x = 437,244,043.01
  5. Step 5: Solve for x
    x = 437,244,043.01/23,129.20
  6. Step 6: Final answer
    x = 18,904.42

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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.