Home / 18,847.74-28,279.05-8,457.18

Finding the Fourth Proportional to 18,847.74, 28,279.05 and 8,457.18

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Solution

The fourth proportional to 18,847.74, 28,279.05 and 8,457.18 is: 12,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,847.74 : 28,279.05 = 8,457.18 : x
  2. Step 2: Convert to fraction form
    18,847.74/28,279.05 = 8,457.18/x
  3. Step 3: Cross multiply
    18,847.74x = 28,279.05 × 8,457.18
  4. Step 4: Simplify right side
    18,847.74x = 239,161,016.08
  5. Step 5: Solve for x
    x = 239,161,016.08/18,847.74
  6. Step 6: Final answer
    x = 12,689.11

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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.