Home / 11,721.92-17,579.63-5,146.47

Finding the Fourth Proportional to 11,721.92, 17,579.63 and 5,146.47

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Solution

The fourth proportional to 11,721.92, 17,579.63 and 5,146.47 is: 7,718.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.92 : 17,579.63 = 5,146.47 : x
  2. Step 2: Convert to fraction form
    11,721.92/17,579.63 = 5,146.47/x
  3. Step 3: Cross multiply
    11,721.92x = 17,579.63 × 5,146.47
  4. Step 4: Simplify right side
    11,721.92x = 90,473,051.27
  5. Step 5: Solve for x
    x = 90,473,051.27/11,721.92
  6. Step 6: Final answer
    x = 7,718.28

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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.