Home / 18,982.32-28,466.12-7,883.30

Finding the Fourth Proportional to 18,982.32, 28,466.12 and 7,883.30

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Solution

The fourth proportional to 18,982.32, 28,466.12 and 7,883.30 is: 11,821.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,982.32 : 28,466.12 = 7,883.30 : x
  2. Step 2: Convert to fraction form
    18,982.32/28,466.12 = 7,883.30/x
  3. Step 3: Cross multiply
    18,982.32x = 28,466.12 × 7,883.30
  4. Step 4: Simplify right side
    18,982.32x = 224,406,963.80
  5. Step 5: Solve for x
    x = 224,406,963.80/18,982.32
  6. Step 6: Final answer
    x = 11,821.89

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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.