Home / 38,811.89-58,218.24-21,272.15

Finding the Fourth Proportional to 38,811.89, 58,218.24 and 21,272.15

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Solution

The fourth proportional to 38,811.89, 58,218.24 and 21,272.15 is: 31,908.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,811.89 : 58,218.24 = 21,272.15 : x
  2. Step 2: Convert to fraction form
    38,811.89/58,218.24 = 21,272.15/x
  3. Step 3: Cross multiply
    38,811.89x = 58,218.24 × 21,272.15
  4. Step 4: Simplify right side
    38,811.89x = 1,238,427,134.02
  5. Step 5: Solve for x
    x = 1,238,427,134.02/38,811.89
  6. Step 6: Final answer
    x = 31,908.45

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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.