Home / 15,930.24-21,983.68-8,856.66

Finding the Fourth Proportional to 15,930.24, 21,983.68 and 8,856.66

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Solution

The fourth proportional to 15,930.24, 21,983.68 and 8,856.66 is: 12,222.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.24 : 21,983.68 = 8,856.66 : x
  2. Step 2: Convert to fraction form
    15,930.24/21,983.68 = 8,856.66/x
  3. Step 3: Cross multiply
    15,930.24x = 21,983.68 × 8,856.66
  4. Step 4: Simplify right side
    15,930.24x = 194,701,979.31
  5. Step 5: Solve for x
    x = 194,701,979.31/15,930.24
  6. Step 6: Final answer
    x = 12,222.16

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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.