Home / 40,676.16-61,016.40-12,972

Finding the Fourth Proportional to 40,676.16, 61,016.40 and 12,972

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Solution

The fourth proportional to 40,676.16, 61,016.40 and 12,972 is: 19,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,676.16 : 61,016.40 = 12,972 : x
  2. Step 2: Convert to fraction form
    40,676.16/61,016.40 = 12,972/x
  3. Step 3: Cross multiply
    40,676.16x = 61,016.40 × 12,972
  4. Step 4: Simplify right side
    40,676.16x = 791,504,740.80
  5. Step 5: Solve for x
    x = 791,504,740.80/40,676.16
  6. Step 6: Final answer
    x = 19,458.69

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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.