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Finding the Fourth Proportional to 13,699.80, 20,549.16 and 9,527.76

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Solution

The fourth proportional to 13,699.80, 20,549.16 and 9,527.76 is: 14,291.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.80 : 20,549.16 = 9,527.76 : x
  2. Step 2: Convert to fraction form
    13,699.80/20,549.16 = 9,527.76/x
  3. Step 3: Cross multiply
    13,699.80x = 20,549.16 × 9,527.76
  4. Step 4: Simplify right side
    13,699.80x = 195,787,464.68
  5. Step 5: Solve for x
    x = 195,787,464.68/13,699.80
  6. Step 6: Final answer
    x = 14,291.26

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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.