Home / 12,402.12-17,103.18-8,145.70

Finding the Fourth Proportional to 12,402.12, 17,103.18 and 8,145.70

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Solution

The fourth proportional to 12,402.12, 17,103.18 and 8,145.70 is: 11,233.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,402.12 : 17,103.18 = 8,145.70 : x
  2. Step 2: Convert to fraction form
    12,402.12/17,103.18 = 8,145.70/x
  3. Step 3: Cross multiply
    12,402.12x = 17,103.18 × 8,145.70
  4. Step 4: Simplify right side
    12,402.12x = 139,317,373.33
  5. Step 5: Solve for x
    x = 139,317,373.33/12,402.12
  6. Step 6: Final answer
    x = 11,233.35

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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.