Home / 10,440.90-15,661.44-5,245.56

Finding the Fourth Proportional to 10,440.90, 15,661.44 and 5,245.56

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Solution

The fourth proportional to 10,440.90, 15,661.44 and 5,245.56 is: 7,868.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,440.90 : 15,661.44 = 5,245.56 : x
  2. Step 2: Convert to fraction form
    10,440.90/15,661.44 = 5,245.56/x
  3. Step 3: Cross multiply
    10,440.90x = 15,661.44 × 5,245.56
  4. Step 4: Simplify right side
    10,440.90x = 82,153,023.21
  5. Step 5: Solve for x
    x = 82,153,023.21/10,440.90
  6. Step 6: Final answer
    x = 7,868.39

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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.