Home / 26,640.08-39,960.20-6,918.80

Finding the Fourth Proportional to 26,640.08, 39,960.20 and 6,918.80

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Solution

The fourth proportional to 26,640.08, 39,960.20 and 6,918.80 is: 10,378.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,640.08 : 39,960.20 = 6,918.80 : x
  2. Step 2: Convert to fraction form
    26,640.08/39,960.20 = 6,918.80/x
  3. Step 3: Cross multiply
    26,640.08x = 39,960.20 × 6,918.80
  4. Step 4: Simplify right side
    26,640.08x = 276,476,631.76
  5. Step 5: Solve for x
    x = 276,476,631.76/26,640.08
  6. Step 6: Final answer
    x = 10,378.22

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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.