Home / 11,621.57-17,426.91-4,220.87

Finding the Fourth Proportional to 11,621.57, 17,426.91 and 4,220.87

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Solution

The fourth proportional to 11,621.57, 17,426.91 and 4,220.87 is: 6,329.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.57 : 17,426.91 = 4,220.87 : x
  2. Step 2: Convert to fraction form
    11,621.57/17,426.91 = 4,220.87/x
  3. Step 3: Cross multiply
    11,621.57x = 17,426.91 × 4,220.87
  4. Step 4: Simplify right side
    11,621.57x = 73,556,721.61
  5. Step 5: Solve for x
    x = 73,556,721.61/11,621.57
  6. Step 6: Final answer
    x = 6,329.33

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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.