Home / 28,251.56-38,987.40-15,676.52

Finding the Fourth Proportional to 28,251.56, 38,987.40 and 15,676.52

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Solution

The fourth proportional to 28,251.56, 38,987.40 and 15,676.52 is: 21,633.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.56 : 38,987.40 = 15,676.52 : x
  2. Step 2: Convert to fraction form
    28,251.56/38,987.40 = 15,676.52/x
  3. Step 3: Cross multiply
    28,251.56x = 38,987.40 × 15,676.52
  4. Step 4: Simplify right side
    28,251.56x = 611,186,755.85
  5. Step 5: Solve for x
    x = 611,186,755.85/28,251.56
  6. Step 6: Final answer
    x = 21,633.73

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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.