Home / 28,432.74-39,195.65-19,908

Finding the Fourth Proportional to 28,432.74, 39,195.65 and 19,908

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Solution

The fourth proportional to 28,432.74, 39,195.65 and 19,908 is: 27,443.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.74 : 39,195.65 = 19,908 : x
  2. Step 2: Convert to fraction form
    28,432.74/39,195.65 = 19,908/x
  3. Step 3: Cross multiply
    28,432.74x = 39,195.65 × 19,908
  4. Step 4: Simplify right side
    28,432.74x = 780,306,900.66
  5. Step 5: Solve for x
    x = 780,306,900.66/28,432.74
  6. Step 6: Final answer
    x = 27,443.96

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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.