Home / 10,819.50-16,221.96-8,705.40

Finding the Fourth Proportional to 10,819.50, 16,221.96 and 8,705.40

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Solution

The fourth proportional to 10,819.50, 16,221.96 and 8,705.40 is: 13,052.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,819.50 : 16,221.96 = 8,705.40 : x
  2. Step 2: Convert to fraction form
    10,819.50/16,221.96 = 8,705.40/x
  3. Step 3: Cross multiply
    10,819.50x = 16,221.96 × 8,705.40
  4. Step 4: Simplify right side
    10,819.50x = 141,218,650.58
  5. Step 5: Solve for x
    x = 141,218,650.58/10,819.50
  6. Step 6: Final answer
    x = 13,052.23

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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.