Home / 20,753.70-28,570.77-17,958.12

Finding the Fourth Proportional to 20,753.70, 28,570.77 and 17,958.12

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Solution

The fourth proportional to 20,753.70, 28,570.77 and 17,958.12 is: 24,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.70 : 28,570.77 = 17,958.12 : x
  2. Step 2: Convert to fraction form
    20,753.70/28,570.77 = 17,958.12/x
  3. Step 3: Cross multiply
    20,753.70x = 28,570.77 × 17,958.12
  4. Step 4: Simplify right side
    20,753.70x = 513,077,316.15
  5. Step 5: Solve for x
    x = 513,077,316.15/20,753.70
  6. Step 6: Final answer
    x = 24,722.21

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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.