Home / 18,117.08-27,144.87-8,761.50

Finding the Fourth Proportional to 18,117.08, 27,144.87 and 8,761.50

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Solution

The fourth proportional to 18,117.08, 27,144.87 and 8,761.50 is: 13,127.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.08 : 27,144.87 = 8,761.50 : x
  2. Step 2: Convert to fraction form
    18,117.08/27,144.87 = 8,761.50/x
  3. Step 3: Cross multiply
    18,117.08x = 27,144.87 × 8,761.50
  4. Step 4: Simplify right side
    18,117.08x = 237,829,745.65
  5. Step 5: Solve for x
    x = 237,829,745.65/18,117.08
  6. Step 6: Final answer
    x = 13,127.38

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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.