Home / 10,172.20-15,236.70-8,444.20

Finding the Fourth Proportional to 10,172.20, 15,236.70 and 8,444.20

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Solution

The fourth proportional to 10,172.20, 15,236.70 and 8,444.20 is: 12,648.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,172.20 : 15,236.70 = 8,444.20 : x
  2. Step 2: Convert to fraction form
    10,172.20/15,236.70 = 8,444.20/x
  3. Step 3: Cross multiply
    10,172.20x = 15,236.70 × 8,444.20
  4. Step 4: Simplify right side
    10,172.20x = 128,661,742.14
  5. Step 5: Solve for x
    x = 128,661,742.14/10,172.20
  6. Step 6: Final answer
    x = 12,648.37

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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.