Home / 13,605.44-20,407.92-7,749.56

Finding the Fourth Proportional to 13,605.44, 20,407.92 and 7,749.56

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Solution

The fourth proportional to 13,605.44, 20,407.92 and 7,749.56 is: 11,624.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.44 : 20,407.92 = 7,749.56 : x
  2. Step 2: Convert to fraction form
    13,605.44/20,407.92 = 7,749.56/x
  3. Step 3: Cross multiply
    13,605.44x = 20,407.92 × 7,749.56
  4. Step 4: Simplify right side
    13,605.44x = 158,152,400.52
  5. Step 5: Solve for x
    x = 158,152,400.52/13,605.44
  6. Step 6: Final answer
    x = 11,624.20

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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.