Home / 20,508.98-28,304.39-12,010.57

Finding the Fourth Proportional to 20,508.98, 28,304.39 and 12,010.57

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Solution

The fourth proportional to 20,508.98, 28,304.39 and 12,010.57 is: 16,575.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.98 : 28,304.39 = 12,010.57 : x
  2. Step 2: Convert to fraction form
    20,508.98/28,304.39 = 12,010.57/x
  3. Step 3: Cross multiply
    20,508.98x = 28,304.39 × 12,010.57
  4. Step 4: Simplify right side
    20,508.98x = 339,951,816.67
  5. Step 5: Solve for x
    x = 339,951,816.67/20,508.98
  6. Step 6: Final answer
    x = 16,575.76

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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.