Home / 28,323.28-39,086.16-15,748

Finding the Fourth Proportional to 28,323.28, 39,086.16 and 15,748

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Solution

The fourth proportional to 28,323.28, 39,086.16 and 15,748 is: 21,732.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,323.28 : 39,086.16 = 15,748 : x
  2. Step 2: Convert to fraction form
    28,323.28/39,086.16 = 15,748/x
  3. Step 3: Cross multiply
    28,323.28x = 39,086.16 × 15,748
  4. Step 4: Simplify right side
    28,323.28x = 615,528,847.68
  5. Step 5: Solve for x
    x = 615,528,847.68/28,323.28
  6. Step 6: Final answer
    x = 21,732.26

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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.