Home / 13,173.11-18,178.50-7,204.65

Finding the Fourth Proportional to 13,173.11, 18,178.50 and 7,204.65

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Solution

The fourth proportional to 13,173.11, 18,178.50 and 7,204.65 is: 9,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.11 : 18,178.50 = 7,204.65 : x
  2. Step 2: Convert to fraction form
    13,173.11/18,178.50 = 7,204.65/x
  3. Step 3: Cross multiply
    13,173.11x = 18,178.50 × 7,204.65
  4. Step 4: Simplify right side
    13,173.11x = 130,969,668.61
  5. Step 5: Solve for x
    x = 130,969,668.61/13,173.11
  6. Step 6: Final answer
    x = 9,942.20

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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.