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Finding the Fourth Proportional to 10,699.32, 14,734.26 and 8,819.04

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Solution

The fourth proportional to 10,699.32, 14,734.26 and 8,819.04 is: 12,144.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,699.32 : 14,734.26 = 8,819.04 : x
  2. Step 2: Convert to fraction form
    10,699.32/14,734.26 = 8,819.04/x
  3. Step 3: Cross multiply
    10,699.32x = 14,734.26 × 8,819.04
  4. Step 4: Simplify right side
    10,699.32x = 129,942,028.31
  5. Step 5: Solve for x
    x = 129,942,028.31/10,699.32
  6. Step 6: Final answer
    x = 12,144.89

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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.