Home / 18,979.65-26,202.85-12,614.87

Finding the Fourth Proportional to 18,979.65, 26,202.85 and 12,614.87

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Solution

The fourth proportional to 18,979.65, 26,202.85 and 12,614.87 is: 17,415.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.65 : 26,202.85 = 12,614.87 : x
  2. Step 2: Convert to fraction form
    18,979.65/26,202.85 = 12,614.87/x
  3. Step 3: Cross multiply
    18,979.65x = 26,202.85 × 12,614.87
  4. Step 4: Simplify right side
    18,979.65x = 330,545,546.38
  5. Step 5: Solve for x
    x = 330,545,546.38/18,979.65
  6. Step 6: Final answer
    x = 17,415.79

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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.