Home / 28,422.46-39,222.52-15,676.88

Finding the Fourth Proportional to 28,422.46, 39,222.52 and 15,676.88

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Solution

The fourth proportional to 28,422.46, 39,222.52 and 15,676.88 is: 21,633.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.46 : 39,222.52 = 15,676.88 : x
  2. Step 2: Convert to fraction form
    28,422.46/39,222.52 = 15,676.88/x
  3. Step 3: Cross multiply
    28,422.46x = 39,222.52 × 15,676.88
  4. Step 4: Simplify right side
    28,422.46x = 614,886,739.34
  5. Step 5: Solve for x
    x = 614,886,739.34/28,422.46
  6. Step 6: Final answer
    x = 21,633.83

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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.