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Finding the Fourth Proportional to 28,176.49, 38,883.49 and 16,239.75

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Solution

The fourth proportional to 28,176.49, 38,883.49 and 16,239.75 is: 22,410.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176.49 : 38,883.49 = 16,239.75 : x
  2. Step 2: Convert to fraction form
    28,176.49/38,883.49 = 16,239.75/x
  3. Step 3: Cross multiply
    28,176.49x = 38,883.49 × 16,239.75
  4. Step 4: Simplify right side
    28,176.49x = 631,458,156.73
  5. Step 5: Solve for x
    x = 631,458,156.73/28,176.49
  6. Step 6: Final answer
    x = 22,410.82

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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.