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Finding the Fourth Proportional to 19,959.78, 27,543.97 and 11,007.13

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Solution

The fourth proportional to 19,959.78, 27,543.97 and 11,007.13 is: 15,189.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.78 : 27,543.97 = 11,007.13 : x
  2. Step 2: Convert to fraction form
    19,959.78/27,543.97 = 11,007.13/x
  3. Step 3: Cross multiply
    19,959.78x = 27,543.97 × 11,007.13
  4. Step 4: Simplify right side
    19,959.78x = 303,180,058.51
  5. Step 5: Solve for x
    x = 303,180,058.51/19,959.78
  6. Step 6: Final answer
    x = 15,189.55

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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.