Home / 15,288.97-21,098.52-8,574.58

Finding the Fourth Proportional to 15,288.97, 21,098.52 and 8,574.58

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Solution

The fourth proportional to 15,288.97, 21,098.52 and 8,574.58 is: 11,832.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288.97 : 21,098.52 = 8,574.58 : x
  2. Step 2: Convert to fraction form
    15,288.97/21,098.52 = 8,574.58/x
  3. Step 3: Cross multiply
    15,288.97x = 21,098.52 × 8,574.58
  4. Step 4: Simplify right side
    15,288.97x = 180,910,947.62
  5. Step 5: Solve for x
    x = 180,910,947.62/15,288.97
  6. Step 6: Final answer
    x = 11,832.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.