Home / 15,678.33-21,631.32-8,963.61

Finding the Fourth Proportional to 15,678.33, 21,631.32 and 8,963.61

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Solution

The fourth proportional to 15,678.33, 21,631.32 and 8,963.61 is: 12,367.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.33 : 21,631.32 = 8,963.61 : x
  2. Step 2: Convert to fraction form
    15,678.33/21,631.32 = 8,963.61/x
  3. Step 3: Cross multiply
    15,678.33x = 21,631.32 × 8,963.61
  4. Step 4: Simplify right side
    15,678.33x = 193,894,716.27
  5. Step 5: Solve for x
    x = 193,894,716.27/15,678.33
  6. Step 6: Final answer
    x = 12,367.05

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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.