Home / 15,377.54-21,216.62-8,660.82

Finding the Fourth Proportional to 15,377.54, 21,216.62 and 8,660.82

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Solution

The fourth proportional to 15,377.54, 21,216.62 and 8,660.82 is: 11,949.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,377.54 : 21,216.62 = 8,660.82 : x
  2. Step 2: Convert to fraction form
    15,377.54/21,216.62 = 8,660.82/x
  3. Step 3: Cross multiply
    15,377.54x = 21,216.62 × 8,660.82
  4. Step 4: Simplify right side
    15,377.54x = 183,753,283.52
  5. Step 5: Solve for x
    x = 183,753,283.52/15,377.54
  6. Step 6: Final answer
    x = 11,949.46

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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.