Home / 18,400.08-27,515.34-13,665.18

Finding the Fourth Proportional to 18,400.08, 27,515.34 and 13,665.18

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Solution

The fourth proportional to 18,400.08, 27,515.34 and 13,665.18 is: 20,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,400.08 : 27,515.34 = 13,665.18 : x
  2. Step 2: Convert to fraction form
    18,400.08/27,515.34 = 13,665.18/x
  3. Step 3: Cross multiply
    18,400.08x = 27,515.34 × 13,665.18
  4. Step 4: Simplify right side
    18,400.08x = 376,002,073.86
  5. Step 5: Solve for x
    x = 376,002,073.86/18,400.08
  6. Step 6: Final answer
    x = 20,434.81

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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.