Home / 13,149.18-18,140.49-8,675.10

Finding the Fourth Proportional to 13,149.18, 18,140.49 and 8,675.10

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Solution

The fourth proportional to 13,149.18, 18,140.49 and 8,675.10 is: 11,968.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.18 : 18,140.49 = 8,675.10 : x
  2. Step 2: Convert to fraction form
    13,149.18/18,140.49 = 8,675.10/x
  3. Step 3: Cross multiply
    13,149.18x = 18,140.49 × 8,675.10
  4. Step 4: Simplify right side
    13,149.18x = 157,370,564.80
  5. Step 5: Solve for x
    x = 157,370,564.80/13,149.18
  6. Step 6: Final answer
    x = 11,968.09

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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.