Home / 28,717.75-39,630.11-16,142.53

Finding the Fourth Proportional to 28,717.75, 39,630.11 and 16,142.53

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Solution

The fourth proportional to 28,717.75, 39,630.11 and 16,142.53 is: 22,276.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,717.75 : 39,630.11 = 16,142.53 : x
  2. Step 2: Convert to fraction form
    28,717.75/39,630.11 = 16,142.53/x
  3. Step 3: Cross multiply
    28,717.75x = 39,630.11 × 16,142.53
  4. Step 4: Simplify right side
    28,717.75x = 639,730,158.87
  5. Step 5: Solve for x
    x = 639,730,158.87/28,717.75
  6. Step 6: Final answer
    x = 22,276.47

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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.