Home / 18,789.72-25,870.74-15,951.48

Finding the Fourth Proportional to 18,789.72, 25,870.74 and 15,951.48

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Solution

The fourth proportional to 18,789.72, 25,870.74 and 15,951.48 is: 21,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.72 : 25,870.74 = 15,951.48 : x
  2. Step 2: Convert to fraction form
    18,789.72/25,870.74 = 15,951.48/x
  3. Step 3: Cross multiply
    18,789.72x = 25,870.74 × 15,951.48
  4. Step 4: Simplify right side
    18,789.72x = 412,676,591.70
  5. Step 5: Solve for x
    x = 412,676,591.70/18,789.72
  6. Step 6: Final answer
    x = 21,962.89

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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.