Home / 20,440.48-30,662.88-8,750.56

Finding the Fourth Proportional to 20,440.48, 30,662.88 and 8,750.56

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Solution

The fourth proportional to 20,440.48, 30,662.88 and 8,750.56 is: 13,126.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.48 : 30,662.88 = 8,750.56 : x
  2. Step 2: Convert to fraction form
    20,440.48/30,662.88 = 8,750.56/x
  3. Step 3: Cross multiply
    20,440.48x = 30,662.88 × 8,750.56
  4. Step 4: Simplify right side
    20,440.48x = 268,317,371.21
  5. Step 5: Solve for x
    x = 268,317,371.21/20,440.48
  6. Step 6: Final answer
    x = 13,126.76

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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.