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Finding the Fourth Proportional to 15,151.51, 20,936.20 and 11,802.97

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Solution

The fourth proportional to 15,151.51, 20,936.20 and 11,802.97 is: 16,309.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,151.51 : 20,936.20 = 11,802.97 : x
  2. Step 2: Convert to fraction form
    15,151.51/20,936.20 = 11,802.97/x
  3. Step 3: Cross multiply
    15,151.51x = 20,936.20 × 11,802.97
  4. Step 4: Simplify right side
    15,151.51x = 247,109,208.35
  5. Step 5: Solve for x
    x = 247,109,208.35/15,151.51
  6. Step 6: Final answer
    x = 16,309.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.