Home / 23,001.20-31,740.28-13,572.72

Finding the Fourth Proportional to 23,001.20, 31,740.28 and 13,572.72

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Solution

The fourth proportional to 23,001.20, 31,740.28 and 13,572.72 is: 18,729.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,001.20 : 31,740.28 = 13,572.72 : x
  2. Step 2: Convert to fraction form
    23,001.20/31,740.28 = 13,572.72/x
  3. Step 3: Cross multiply
    23,001.20x = 31,740.28 × 13,572.72
  4. Step 4: Simplify right side
    23,001.20x = 430,801,933.16
  5. Step 5: Solve for x
    x = 430,801,933.16/23,001.20
  6. Step 6: Final answer
    x = 18,729.54

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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.