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Finding the Fourth Proportional to 28,805.80, 43,207.84 and 15,740.92

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Solution

The fourth proportional to 28,805.80, 43,207.84 and 15,740.92 is: 23,610.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,805.80 : 43,207.84 = 15,740.92 : x
  2. Step 2: Convert to fraction form
    28,805.80/43,207.84 = 15,740.92/x
  3. Step 3: Cross multiply
    28,805.80x = 43,207.84 × 15,740.92
  4. Step 4: Simplify right side
    28,805.80x = 680,131,152.81
  5. Step 5: Solve for x
    x = 680,131,152.81/28,805.80
  6. Step 6: Final answer
    x = 23,610.91

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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.