Home / 13,118.24-18,103.01-7,149.89

Finding the Fourth Proportional to 13,118.24, 18,103.01 and 7,149.89

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Solution

The fourth proportional to 13,118.24, 18,103.01 and 7,149.89 is: 9,866.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.24 : 18,103.01 = 7,149.89 : x
  2. Step 2: Convert to fraction form
    13,118.24/18,103.01 = 7,149.89/x
  3. Step 3: Cross multiply
    13,118.24x = 18,103.01 × 7,149.89
  4. Step 4: Simplify right side
    13,118.24x = 129,434,403.90
  5. Step 5: Solve for x
    x = 129,434,403.90/13,118.24
  6. Step 6: Final answer
    x = 9,866.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.