Home / 40,674.40-61,013.78-12,613.84

Finding the Fourth Proportional to 40,674.40, 61,013.78 and 12,613.84

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Solution

The fourth proportional to 40,674.40, 61,013.78 and 12,613.84 is: 18,921.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,674.40 : 61,013.78 = 12,613.84 : x
  2. Step 2: Convert to fraction form
    40,674.40/61,013.78 = 12,613.84/x
  3. Step 3: Cross multiply
    40,674.40x = 61,013.78 × 12,613.84
  4. Step 4: Simplify right side
    40,674.40x = 769,618,058.72
  5. Step 5: Solve for x
    x = 769,618,058.72/40,674.40
  6. Step 6: Final answer
    x = 18,921.44

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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.