Home / 15,665.38-21,619.76-8,951.55

Finding the Fourth Proportional to 15,665.38, 21,619.76 and 8,951.55

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Solution

The fourth proportional to 15,665.38, 21,619.76 and 8,951.55 is: 12,354.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,665.38 : 21,619.76 = 8,951.55 : x
  2. Step 2: Convert to fraction form
    15,665.38/21,619.76 = 8,951.55/x
  3. Step 3: Cross multiply
    15,665.38x = 21,619.76 × 8,951.55
  4. Step 4: Simplify right side
    15,665.38x = 193,530,362.63
  5. Step 5: Solve for x
    x = 193,530,362.63/15,665.38
  6. Step 6: Final answer
    x = 12,354.02

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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.