Home / 36,315.42-54,471.24-21,330.78

Finding the Fourth Proportional to 36,315.42, 54,471.24 and 21,330.78

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Solution

The fourth proportional to 36,315.42, 54,471.24 and 21,330.78 is: 31,995.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,315.42 : 54,471.24 = 21,330.78 : x
  2. Step 2: Convert to fraction form
    36,315.42/54,471.24 = 21,330.78/x
  3. Step 3: Cross multiply
    36,315.42x = 54,471.24 × 21,330.78
  4. Step 4: Simplify right side
    36,315.42x = 1,161,914,036.77
  5. Step 5: Solve for x
    x = 1,161,914,036.77/36,315.42
  6. Step 6: Final answer
    x = 31,995.06

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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.