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Finding the Fourth Proportional to 13,751.76, 20,616.12 and 5,549.52

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Solution

The fourth proportional to 13,751.76, 20,616.12 and 5,549.52 is: 8,319.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.76 : 20,616.12 = 5,549.52 : x
  2. Step 2: Convert to fraction form
    13,751.76/20,616.12 = 5,549.52/x
  3. Step 3: Cross multiply
    13,751.76x = 20,616.12 × 5,549.52
  4. Step 4: Simplify right side
    13,751.76x = 114,409,570.26
  5. Step 5: Solve for x
    x = 114,409,570.26/13,751.76
  6. Step 6: Final answer
    x = 8,319.63

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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.