Home / 38,780.40-58,123.58-17,691.55

Finding the Fourth Proportional to 38,780.40, 58,123.58 and 17,691.55

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Solution

The fourth proportional to 38,780.40, 58,123.58 and 17,691.55 is: 26,515.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,780.40 : 58,123.58 = 17,691.55 : x
  2. Step 2: Convert to fraction form
    38,780.40/58,123.58 = 17,691.55/x
  3. Step 3: Cross multiply
    38,780.40x = 58,123.58 × 17,691.55
  4. Step 4: Simplify right side
    38,780.40x = 1,028,295,987.98
  5. Step 5: Solve for x
    x = 1,028,295,987.98/38,780.40
  6. Step 6: Final answer
    x = 26,515.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.