Home / 16,864.38-25,300.89-5,178.78

Finding the Fourth Proportional to 16,864.38, 25,300.89 and 5,178.78

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Solution

The fourth proportional to 16,864.38, 25,300.89 and 5,178.78 is: 7,769.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,864.38 : 25,300.89 = 5,178.78 : x
  2. Step 2: Convert to fraction form
    16,864.38/25,300.89 = 5,178.78/x
  3. Step 3: Cross multiply
    16,864.38x = 25,300.89 × 5,178.78
  4. Step 4: Simplify right side
    16,864.38x = 131,027,743.11
  5. Step 5: Solve for x
    x = 131,027,743.11/16,864.38
  6. Step 6: Final answer
    x = 7,769.50

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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.