Home / 10,780.73-16,168.67-2,990.15

Finding the Fourth Proportional to 10,780.73, 16,168.67 and 2,990.15

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Solution

The fourth proportional to 10,780.73, 16,168.67 and 2,990.15 is: 4,484.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.73 : 16,168.67 = 2,990.15 : x
  2. Step 2: Convert to fraction form
    10,780.73/16,168.67 = 2,990.15/x
  3. Step 3: Cross multiply
    10,780.73x = 16,168.67 × 2,990.15
  4. Step 4: Simplify right side
    10,780.73x = 48,346,733.65
  5. Step 5: Solve for x
    x = 48,346,733.65/10,780.73
  6. Step 6: Final answer
    x = 4,484.55

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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.