Home / 15,359.27-21,194.29-8,644.78

Finding the Fourth Proportional to 15,359.27, 21,194.29 and 8,644.78

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Solution

The fourth proportional to 15,359.27, 21,194.29 and 8,644.78 is: 11,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.27 : 21,194.29 = 8,644.78 : x
  2. Step 2: Convert to fraction form
    15,359.27/21,194.29 = 8,644.78/x
  3. Step 3: Cross multiply
    15,359.27x = 21,194.29 × 8,644.78
  4. Step 4: Simplify right side
    15,359.27x = 183,219,974.31
  5. Step 5: Solve for x
    x = 183,219,974.31/15,359.27
  6. Step 6: Final answer
    x = 11,928.95

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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.