Home / 27,142.80-40,716.60-7,421.44

Finding the Fourth Proportional to 27,142.80, 40,716.60 and 7,421.44

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Solution

The fourth proportional to 27,142.80, 40,716.60 and 7,421.44 is: 11,132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,142.80 : 40,716.60 = 7,421.44 : x
  2. Step 2: Convert to fraction form
    27,142.80/40,716.60 = 7,421.44/x
  3. Step 3: Cross multiply
    27,142.80x = 40,716.60 × 7,421.44
  4. Step 4: Simplify right side
    27,142.80x = 302,175,803.90
  5. Step 5: Solve for x
    x = 302,175,803.90/27,142.80
  6. Step 6: Final answer
    x = 11,132.82

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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.