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Finding the Fourth Proportional to 36,213.71, 49,978.16 and 21,111.26

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Solution

The fourth proportional to 36,213.71, 49,978.16 and 21,111.26 is: 29,135.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,213.71 : 49,978.16 = 21,111.26 : x
  2. Step 2: Convert to fraction form
    36,213.71/49,978.16 = 21,111.26/x
  3. Step 3: Cross multiply
    36,213.71x = 49,978.16 × 21,111.26
  4. Step 4: Simplify right side
    36,213.71x = 1,055,101,574.63
  5. Step 5: Solve for x
    x = 1,055,101,574.63/36,213.71
  6. Step 6: Final answer
    x = 29,135.42

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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.