Home / 12,377.12-18,561.09-4,979.05

Finding the Fourth Proportional to 12,377.12, 18,561.09 and 4,979.05

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Solution

The fourth proportional to 12,377.12, 18,561.09 and 4,979.05 is: 7,466.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,377.12 : 18,561.09 = 4,979.05 : x
  2. Step 2: Convert to fraction form
    12,377.12/18,561.09 = 4,979.05/x
  3. Step 3: Cross multiply
    12,377.12x = 18,561.09 × 4,979.05
  4. Step 4: Simplify right side
    12,377.12x = 92,416,595.16
  5. Step 5: Solve for x
    x = 92,416,595.16/12,377.12
  6. Step 6: Final answer
    x = 7,466.73

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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.