Home / 28,447.20-39,257-15,871.92

Finding the Fourth Proportional to 28,447.20, 39,257 and 15,871.92

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Solution

The fourth proportional to 28,447.20, 39,257 and 15,871.92 is: 21,903.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.20 : 39,257 = 15,871.92 : x
  2. Step 2: Convert to fraction form
    28,447.20/39,257 = 15,871.92/x
  3. Step 3: Cross multiply
    28,447.20x = 39,257 × 15,871.92
  4. Step 4: Simplify right side
    28,447.20x = 623,083,963.44
  5. Step 5: Solve for x
    x = 623,083,963.44/28,447.20
  6. Step 6: Final answer
    x = 21,903.17

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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.