Home / 36,690.28-55,036.38-13,318.12

Finding the Fourth Proportional to 36,690.28, 55,036.38 and 13,318.12

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Solution

The fourth proportional to 36,690.28, 55,036.38 and 13,318.12 is: 19,977.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,690.28 : 55,036.38 = 13,318.12 : x
  2. Step 2: Convert to fraction form
    36,690.28/55,036.38 = 13,318.12/x
  3. Step 3: Cross multiply
    36,690.28x = 55,036.38 × 13,318.12
  4. Step 4: Simplify right side
    36,690.28x = 732,981,113.21
  5. Step 5: Solve for x
    x = 732,981,113.21/36,690.28
  6. Step 6: Final answer
    x = 19,977.53

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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.