Home / 12,800.16-19,187.28-8,629.92

Finding the Fourth Proportional to 12,800.16, 19,187.28 and 8,629.92

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Solution

The fourth proportional to 12,800.16, 19,187.28 and 8,629.92 is: 12,936.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,800.16 : 19,187.28 = 8,629.92 : x
  2. Step 2: Convert to fraction form
    12,800.16/19,187.28 = 8,629.92/x
  3. Step 3: Cross multiply
    12,800.16x = 19,187.28 × 8,629.92
  4. Step 4: Simplify right side
    12,800.16x = 165,584,691.42
  5. Step 5: Solve for x
    x = 165,584,691.42/12,800.16
  6. Step 6: Final answer
    x = 12,936.14

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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.