Home / 11,721.24-17,581.86-5,147.48

Finding the Fourth Proportional to 11,721.24, 17,581.86 and 5,147.48

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Solution

The fourth proportional to 11,721.24, 17,581.86 and 5,147.48 is: 7,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.24 : 17,581.86 = 5,147.48 : x
  2. Step 2: Convert to fraction form
    11,721.24/17,581.86 = 5,147.48/x
  3. Step 3: Cross multiply
    11,721.24x = 17,581.86 × 5,147.48
  4. Step 4: Simplify right side
    11,721.24x = 90,502,316.67
  5. Step 5: Solve for x
    x = 90,502,316.67/11,721.24
  6. Step 6: Final answer
    x = 7,721.22

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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.