Home / 18,780.52-25,938.40-12,801.92

Finding the Fourth Proportional to 18,780.52, 25,938.40 and 12,801.92

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Solution

The fourth proportional to 18,780.52, 25,938.40 and 12,801.92 is: 17,681.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.52 : 25,938.40 = 12,801.92 : x
  2. Step 2: Convert to fraction form
    18,780.52/25,938.40 = 12,801.92/x
  3. Step 3: Cross multiply
    18,780.52x = 25,938.40 × 12,801.92
  4. Step 4: Simplify right side
    18,780.52x = 332,061,321.73
  5. Step 5: Solve for x
    x = 332,061,321.73/18,780.52
  6. Step 6: Final answer
    x = 17,681.16

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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.