Home / 15,112.20-22,662.90-5,251.80

Finding the Fourth Proportional to 15,112.20, 22,662.90 and 5,251.80

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Solution

The fourth proportional to 15,112.20, 22,662.90 and 5,251.80 is: 7,875.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.20 : 22,662.90 = 5,251.80 : x
  2. Step 2: Convert to fraction form
    15,112.20/22,662.90 = 5,251.80/x
  3. Step 3: Cross multiply
    15,112.20x = 22,662.90 × 5,251.80
  4. Step 4: Simplify right side
    15,112.20x = 119,021,018.22
  5. Step 5: Solve for x
    x = 119,021,018.22/15,112.20
  6. Step 6: Final answer
    x = 7,875.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.