Home / 39,380.34-54,343.23-21,475.02

Finding the Fourth Proportional to 39,380.34, 54,343.23 and 21,475.02

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Solution

The fourth proportional to 39,380.34, 54,343.23 and 21,475.02 is: 29,634.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,380.34 : 54,343.23 = 21,475.02 : x
  2. Step 2: Convert to fraction form
    39,380.34/54,343.23 = 21,475.02/x
  3. Step 3: Cross multiply
    39,380.34x = 54,343.23 × 21,475.02
  4. Step 4: Simplify right side
    39,380.34x = 1,167,021,951.11
  5. Step 5: Solve for x
    x = 1,167,021,951.11/39,380.34
  6. Step 6: Final answer
    x = 29,634.63

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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.