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Finding the Fourth Proportional to 28,686.66, 43,020.27 and 10,913.10

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Solution

The fourth proportional to 28,686.66, 43,020.27 and 10,913.10 is: 16,365.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.66 : 43,020.27 = 10,913.10 : x
  2. Step 2: Convert to fraction form
    28,686.66/43,020.27 = 10,913.10/x
  3. Step 3: Cross multiply
    28,686.66x = 43,020.27 × 10,913.10
  4. Step 4: Simplify right side
    28,686.66x = 469,484,508.54
  5. Step 5: Solve for x
    x = 469,484,508.54/28,686.66
  6. Step 6: Final answer
    x = 16,365.95

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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.