Home / 18,778.52-25,935.64-12,799.92

Finding the Fourth Proportional to 18,778.52, 25,935.64 and 12,799.92

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Solution

The fourth proportional to 18,778.52, 25,935.64 and 12,799.92 is: 17,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.52 : 25,935.64 = 12,799.92 : x
  2. Step 2: Convert to fraction form
    18,778.52/25,935.64 = 12,799.92/x
  3. Step 3: Cross multiply
    18,778.52x = 25,935.64 × 12,799.92
  4. Step 4: Simplify right side
    18,778.52x = 331,974,117.15
  5. Step 5: Solve for x
    x = 331,974,117.15/18,778.52
  6. Step 6: Final answer
    x = 17,678.40

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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.