Home / 12,218.68-18,329.52-4,319.56

Finding the Fourth Proportional to 12,218.68, 18,329.52 and 4,319.56

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Solution

The fourth proportional to 12,218.68, 18,329.52 and 4,319.56 is: 6,479.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.68 : 18,329.52 = 4,319.56 : x
  2. Step 2: Convert to fraction form
    12,218.68/18,329.52 = 4,319.56/x
  3. Step 3: Cross multiply
    12,218.68x = 18,329.52 × 4,319.56
  4. Step 4: Simplify right side
    12,218.68x = 79,175,461.41
  5. Step 5: Solve for x
    x = 79,175,461.41/12,218.68
  6. Step 6: Final answer
    x = 6,479.87

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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.