Home / 20,770.65-28,679.82-16,724.63

Finding the Fourth Proportional to 20,770.65, 28,679.82 and 16,724.63

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Solution

The fourth proportional to 20,770.65, 28,679.82 and 16,724.63 is: 23,093.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.65 : 28,679.82 = 16,724.63 : x
  2. Step 2: Convert to fraction form
    20,770.65/28,679.82 = 16,724.63/x
  3. Step 3: Cross multiply
    20,770.65x = 28,679.82 × 16,724.63
  4. Step 4: Simplify right side
    20,770.65x = 479,659,234.57
  5. Step 5: Solve for x
    x = 479,659,234.57/20,770.65
  6. Step 6: Final answer
    x = 23,093.13

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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.