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Finding the Fourth Proportional to 13,242.72, 19,868.97 and 9,549.12

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Solution

The fourth proportional to 13,242.72, 19,868.97 and 9,549.12 is: 14,327.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.72 : 19,868.97 = 9,549.12 : x
  2. Step 2: Convert to fraction form
    13,242.72/19,868.97 = 9,549.12/x
  3. Step 3: Cross multiply
    13,242.72x = 19,868.97 × 9,549.12
  4. Step 4: Simplify right side
    13,242.72x = 189,731,178.81
  5. Step 5: Solve for x
    x = 189,731,178.81/13,242.72
  6. Step 6: Final answer
    x = 14,327.21

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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.