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Finding the Fourth Proportional to 13,624.43, 18,801.10 and 7,959.70

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Solution

The fourth proportional to 13,624.43, 18,801.10 and 7,959.70 is: 10,984.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,624.43 : 18,801.10 = 7,959.70 : x
  2. Step 2: Convert to fraction form
    13,624.43/18,801.10 = 7,959.70/x
  3. Step 3: Cross multiply
    13,624.43x = 18,801.10 × 7,959.70
  4. Step 4: Simplify right side
    13,624.43x = 149,651,115.67
  5. Step 5: Solve for x
    x = 149,651,115.67/13,624.43
  6. Step 6: Final answer
    x = 10,984.03

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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.