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Finding the Fourth Proportional to 13,294.84, 18,343.08 and 8,581.88

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Solution

The fourth proportional to 13,294.84, 18,343.08 and 8,581.88 is: 11,840.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,294.84 : 18,343.08 = 8,581.88 : x
  2. Step 2: Convert to fraction form
    13,294.84/18,343.08 = 8,581.88/x
  3. Step 3: Cross multiply
    13,294.84x = 18,343.08 × 8,581.88
  4. Step 4: Simplify right side
    13,294.84x = 157,418,111.39
  5. Step 5: Solve for x
    x = 157,418,111.39/13,294.84
  6. Step 6: Final answer
    x = 11,840.54

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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.