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Finding the Fourth Proportional to 13,441.43, 18,549.11 and 7,472.74

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Solution

The fourth proportional to 13,441.43, 18,549.11 and 7,472.74 is: 10,312.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,441.43 : 18,549.11 = 7,472.74 : x
  2. Step 2: Convert to fraction form
    13,441.43/18,549.11 = 7,472.74/x
  3. Step 3: Cross multiply
    13,441.43x = 18,549.11 × 7,472.74
  4. Step 4: Simplify right side
    13,441.43x = 138,612,676.26
  5. Step 5: Solve for x
    x = 138,612,676.26/13,441.43
  6. Step 6: Final answer
    x = 10,312.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.