Home / 28,124.66-42,186.42-11,480.79

Finding the Fourth Proportional to 28,124.66, 42,186.42 and 11,480.79

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Solution

The fourth proportional to 28,124.66, 42,186.42 and 11,480.79 is: 17,220.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,124.66 : 42,186.42 = 11,480.79 : x
  2. Step 2: Convert to fraction form
    28,124.66/42,186.42 = 11,480.79/x
  3. Step 3: Cross multiply
    28,124.66x = 42,186.42 × 11,480.79
  4. Step 4: Simplify right side
    28,124.66x = 484,333,428.87
  5. Step 5: Solve for x
    x = 484,333,428.87/28,124.66
  6. Step 6: Final answer
    x = 17,220.95

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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.