Home / 15,320.20-21,141.90-8,951.16

Finding the Fourth Proportional to 15,320.20, 21,141.90 and 8,951.16

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Solution

The fourth proportional to 15,320.20, 21,141.90 and 8,951.16 is: 12,352.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.20 : 21,141.90 = 8,951.16 : x
  2. Step 2: Convert to fraction form
    15,320.20/21,141.90 = 8,951.16/x
  3. Step 3: Cross multiply
    15,320.20x = 21,141.90 × 8,951.16
  4. Step 4: Simplify right side
    15,320.20x = 189,244,529.60
  5. Step 5: Solve for x
    x = 189,244,529.60/15,320.20
  6. Step 6: Final answer
    x = 12,352.61

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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.