Home / 18,878.30-28,317.45-16,999.10

Finding the Fourth Proportional to 18,878.30, 28,317.45 and 16,999.10

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Solution

The fourth proportional to 18,878.30, 28,317.45 and 16,999.10 is: 25,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.30 : 28,317.45 = 16,999.10 : x
  2. Step 2: Convert to fraction form
    18,878.30/28,317.45 = 16,999.10/x
  3. Step 3: Cross multiply
    18,878.30x = 28,317.45 × 16,999.10
  4. Step 4: Simplify right side
    18,878.30x = 481,371,164.30
  5. Step 5: Solve for x
    x = 481,371,164.30/18,878.30
  6. Step 6: Final answer
    x = 25,498.65

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Similar ratio
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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.