Home / 18,861.22-28,291.88-5,713.70

Finding the Fourth Proportional to 18,861.22, 28,291.88 and 5,713.70

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Solution

The fourth proportional to 18,861.22, 28,291.88 and 5,713.70 is: 8,570.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.22 : 28,291.88 = 5,713.70 : x
  2. Step 2: Convert to fraction form
    18,861.22/28,291.88 = 5,713.70/x
  3. Step 3: Cross multiply
    18,861.22x = 28,291.88 × 5,713.70
  4. Step 4: Simplify right side
    18,861.22x = 161,651,356.92
  5. Step 5: Solve for x
    x = 161,651,356.92/18,861.22
  6. Step 6: Final answer
    x = 8,570.57

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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.