Home / 12,310.16-16,979.40-8,329.52

Finding the Fourth Proportional to 12,310.16, 16,979.40 and 8,329.52

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Solution

The fourth proportional to 12,310.16, 16,979.40 and 8,329.52 is: 11,488.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.16 : 16,979.40 = 8,329.52 : x
  2. Step 2: Convert to fraction form
    12,310.16/16,979.40 = 8,329.52/x
  3. Step 3: Cross multiply
    12,310.16x = 16,979.40 × 8,329.52
  4. Step 4: Simplify right side
    12,310.16x = 141,430,251.89
  5. Step 5: Solve for x
    x = 141,430,251.89/12,310.16
  6. Step 6: Final answer
    x = 11,488.90

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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.