Home / 12,785.13-19,168.05-8,613.42

Finding the Fourth Proportional to 12,785.13, 19,168.05 and 8,613.42

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Solution

The fourth proportional to 12,785.13, 19,168.05 and 8,613.42 is: 12,913.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,785.13 : 19,168.05 = 8,613.42 : x
  2. Step 2: Convert to fraction form
    12,785.13/19,168.05 = 8,613.42/x
  3. Step 3: Cross multiply
    12,785.13x = 19,168.05 × 8,613.42
  4. Step 4: Simplify right side
    12,785.13x = 165,102,465.23
  5. Step 5: Solve for x
    x = 165,102,465.23/12,785.13
  6. Step 6: Final answer
    x = 12,913.63

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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.