Home / 28,781.28-39,721.20-16,848.48

Finding the Fourth Proportional to 28,781.28, 39,721.20 and 16,848.48

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Solution

The fourth proportional to 28,781.28, 39,721.20 and 16,848.48 is: 23,252.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.28 : 39,721.20 = 16,848.48 : x
  2. Step 2: Convert to fraction form
    28,781.28/39,721.20 = 16,848.48/x
  3. Step 3: Cross multiply
    28,781.28x = 39,721.20 × 16,848.48
  4. Step 4: Simplify right side
    28,781.28x = 669,241,843.78
  5. Step 5: Solve for x
    x = 669,241,843.78/28,781.28
  6. Step 6: Final answer
    x = 23,252.68

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1.5x scale

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.