Home / 18,351.65-27,518.16-7,817.60

Finding the Fourth Proportional to 18,351.65, 27,518.16 and 7,817.60

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Solution

The fourth proportional to 18,351.65, 27,518.16 and 7,817.60 is: 11,722.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.65 : 27,518.16 = 7,817.60 : x
  2. Step 2: Convert to fraction form
    18,351.65/27,518.16 = 7,817.60/x
  3. Step 3: Cross multiply
    18,351.65x = 27,518.16 × 7,817.60
  4. Step 4: Simplify right side
    18,351.65x = 215,125,967.62
  5. Step 5: Solve for x
    x = 215,125,967.62/18,351.65
  6. Step 6: Final answer
    x = 11,722.43

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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.