Home / 28,509.77-42,766.41-10,979.66

Finding the Fourth Proportional to 28,509.77, 42,766.41 and 10,979.66

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Solution

The fourth proportional to 28,509.77, 42,766.41 and 10,979.66 is: 16,470.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.77 : 42,766.41 = 10,979.66 : x
  2. Step 2: Convert to fraction form
    28,509.77/42,766.41 = 10,979.66/x
  3. Step 3: Cross multiply
    28,509.77x = 42,766.41 × 10,979.66
  4. Step 4: Simplify right side
    28,509.77x = 469,560,641.22
  5. Step 5: Solve for x
    x = 469,560,641.22/28,509.77
  6. Step 6: Final answer
    x = 16,470.17

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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.