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Finding the Fourth Proportional to 28,888.76, 43,326.88 and 16,872.88

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Solution

The fourth proportional to 28,888.76, 43,326.88 and 16,872.88 is: 25,305.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,888.76 : 43,326.88 = 16,872.88 : x
  2. Step 2: Convert to fraction form
    28,888.76/43,326.88 = 16,872.88/x
  3. Step 3: Cross multiply
    28,888.76x = 43,326.88 × 16,872.88
  4. Step 4: Simplify right side
    28,888.76x = 731,049,247.01
  5. Step 5: Solve for x
    x = 731,049,247.01/28,888.76
  6. Step 6: Final answer
    x = 25,305.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.