Home / 15,927.64-21,979.20-8,853.82

Finding the Fourth Proportional to 15,927.64, 21,979.20 and 8,853.82

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Solution

The fourth proportional to 15,927.64, 21,979.20 and 8,853.82 is: 12,217.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,927.64 : 21,979.20 = 8,853.82 : x
  2. Step 2: Convert to fraction form
    15,927.64/21,979.20 = 8,853.82/x
  3. Step 3: Cross multiply
    15,927.64x = 21,979.20 × 8,853.82
  4. Step 4: Simplify right side
    15,927.64x = 194,599,880.54
  5. Step 5: Solve for x
    x = 194,599,880.54/15,927.64
  6. Step 6: Final answer
    x = 12,217.75

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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.