Home / 10,318.53-15,480.20-8,218.11

Finding the Fourth Proportional to 10,318.53, 15,480.20 and 8,218.11

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Solution

The fourth proportional to 10,318.53, 15,480.20 and 8,218.11 is: 12,329.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,318.53 : 15,480.20 = 8,218.11 : x
  2. Step 2: Convert to fraction form
    10,318.53/15,480.20 = 8,218.11/x
  3. Step 3: Cross multiply
    10,318.53x = 15,480.20 × 8,218.11
  4. Step 4: Simplify right side
    10,318.53x = 127,217,986.42
  5. Step 5: Solve for x
    x = 127,217,986.42/10,318.53
  6. Step 6: Final answer
    x = 12,329.08

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1.5x scale

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.