Home / 28,251.28-38,985.84-15,676.96

Finding the Fourth Proportional to 28,251.28, 38,985.84 and 15,676.96

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Solution

The fourth proportional to 28,251.28, 38,985.84 and 15,676.96 is: 21,633.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.28 : 38,985.84 = 15,676.96 : x
  2. Step 2: Convert to fraction form
    28,251.28/38,985.84 = 15,676.96/x
  3. Step 3: Cross multiply
    28,251.28x = 38,985.84 × 15,676.96
  4. Step 4: Simplify right side
    28,251.28x = 611,179,454.25
  5. Step 5: Solve for x
    x = 611,179,454.25/28,251.28
  6. Step 6: Final answer
    x = 21,633.69

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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.