Home / 12,519.38-18,779.08-5,122.56

Finding the Fourth Proportional to 12,519.38, 18,779.08 and 5,122.56

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Solution

The fourth proportional to 12,519.38, 18,779.08 and 5,122.56 is: 7,683.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.38 : 18,779.08 = 5,122.56 : x
  2. Step 2: Convert to fraction form
    12,519.38/18,779.08 = 5,122.56/x
  3. Step 3: Cross multiply
    12,519.38x = 18,779.08 × 5,122.56
  4. Step 4: Simplify right side
    12,519.38x = 96,196,964.04
  5. Step 5: Solve for x
    x = 96,196,964.04/12,519.38
  6. Step 6: Final answer
    x = 7,683.84

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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.