Home / 12,919.20-17,826.35-7,613.29

Finding the Fourth Proportional to 12,919.20, 17,826.35 and 7,613.29

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Solution

The fourth proportional to 12,919.20, 17,826.35 and 7,613.29 is: 10,505.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.20 : 17,826.35 = 7,613.29 : x
  2. Step 2: Convert to fraction form
    12,919.20/17,826.35 = 7,613.29/x
  3. Step 3: Cross multiply
    12,919.20x = 17,826.35 × 7,613.29
  4. Step 4: Simplify right side
    12,919.20x = 135,717,156.41
  5. Step 5: Solve for x
    x = 135,717,156.41/12,919.20
  6. Step 6: Final answer
    x = 10,505.08

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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.