Home / 28,174.68-38,864.16-18,614.88

Finding the Fourth Proportional to 28,174.68, 38,864.16 and 18,614.88

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Solution

The fourth proportional to 28,174.68, 38,864.16 and 18,614.88 is: 25,677.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,174.68 : 38,864.16 = 18,614.88 : x
  2. Step 2: Convert to fraction form
    28,174.68/38,864.16 = 18,614.88/x
  3. Step 3: Cross multiply
    28,174.68x = 38,864.16 × 18,614.88
  4. Step 4: Simplify right side
    28,174.68x = 723,451,674.70
  5. Step 5: Solve for x
    x = 723,451,674.70/28,174.68
  6. Step 6: Final answer
    x = 25,677.37

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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.