Home / 18,999.38-28,499.04-4,959.36

Finding the Fourth Proportional to 18,999.38, 28,499.04 and 4,959.36

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Solution

The fourth proportional to 18,999.38, 28,499.04 and 4,959.36 is: 7,439.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.38 : 28,499.04 = 4,959.36 : x
  2. Step 2: Convert to fraction form
    18,999.38/28,499.04 = 4,959.36/x
  3. Step 3: Cross multiply
    18,999.38x = 28,499.04 × 4,959.36
  4. Step 4: Simplify right side
    18,999.38x = 141,336,999.01
  5. Step 5: Solve for x
    x = 141,336,999.01/18,999.38
  6. Step 6: Final answer
    x = 7,439.03

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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.