Home / 18,851.87-28,279.13-5,705.24

Finding the Fourth Proportional to 18,851.87, 28,279.13 and 5,705.24

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Solution

The fourth proportional to 18,851.87, 28,279.13 and 5,705.24 is: 8,558.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,851.87 : 28,279.13 = 5,705.24 : x
  2. Step 2: Convert to fraction form
    18,851.87/28,279.13 = 5,705.24/x
  3. Step 3: Cross multiply
    18,851.87x = 28,279.13 × 5,705.24
  4. Step 4: Simplify right side
    18,851.87x = 161,339,053.72
  5. Step 5: Solve for x
    x = 161,339,053.72/18,851.87
  6. Step 6: Final answer
    x = 8,558.25

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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.