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Finding the Fourth Proportional to 28,510.57, 42,762.82 and 8,786.97

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Solution

The fourth proportional to 28,510.57, 42,762.82 and 8,786.97 is: 13,179.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.57 : 42,762.82 = 8,786.97 : x
  2. Step 2: Convert to fraction form
    28,510.57/42,762.82 = 8,786.97/x
  3. Step 3: Cross multiply
    28,510.57x = 42,762.82 × 8,786.97
  4. Step 4: Simplify right side
    28,510.57x = 375,755,616.46
  5. Step 5: Solve for x
    x = 375,755,616.46/28,510.57
  6. Step 6: Final answer
    x = 13,179.52

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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.