Home / 15,898.12-21,939.60-8,825.20

Finding the Fourth Proportional to 15,898.12, 21,939.60 and 8,825.20

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Solution

The fourth proportional to 15,898.12, 21,939.60 and 8,825.20 is: 12,178.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,898.12 : 21,939.60 = 8,825.20 : x
  2. Step 2: Convert to fraction form
    15,898.12/21,939.60 = 8,825.20/x
  3. Step 3: Cross multiply
    15,898.12x = 21,939.60 × 8,825.20
  4. Step 4: Simplify right side
    15,898.12x = 193,621,357.92
  5. Step 5: Solve for x
    x = 193,621,357.92/15,898.12
  6. Step 6: Final answer
    x = 12,178.88

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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.