Home / 13,117.50-18,101.62-7,149.04

Finding the Fourth Proportional to 13,117.50, 18,101.62 and 7,149.04

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Solution

The fourth proportional to 13,117.50, 18,101.62 and 7,149.04 is: 9,865.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.50 : 18,101.62 = 7,149.04 : x
  2. Step 2: Convert to fraction form
    13,117.50/18,101.62 = 7,149.04/x
  3. Step 3: Cross multiply
    13,117.50x = 18,101.62 × 7,149.04
  4. Step 4: Simplify right side
    13,117.50x = 129,409,205.44
  5. Step 5: Solve for x
    x = 129,409,205.44/13,117.50
  6. Step 6: Final answer
    x = 9,865.39

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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.