Home / 18,506.30-27,763.55-8,640.19

Finding the Fourth Proportional to 18,506.30, 27,763.55 and 8,640.19

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Solution

The fourth proportional to 18,506.30, 27,763.55 and 8,640.19 is: 12,962.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,506.30 : 27,763.55 = 8,640.19 : x
  2. Step 2: Convert to fraction form
    18,506.30/27,763.55 = 8,640.19/x
  3. Step 3: Cross multiply
    18,506.30x = 27,763.55 × 8,640.19
  4. Step 4: Simplify right side
    18,506.30x = 239,882,370.98
  5. Step 5: Solve for x
    x = 239,882,370.98/18,506.30
  6. Step 6: Final answer
    x = 12,962.20

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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.