Home / 38,983.86-53,797.66-21,988.06

Finding the Fourth Proportional to 38,983.86, 53,797.66 and 21,988.06

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Solution

The fourth proportional to 38,983.86, 53,797.66 and 21,988.06 is: 30,343.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,983.86 : 53,797.66 = 21,988.06 : x
  2. Step 2: Convert to fraction form
    38,983.86/53,797.66 = 21,988.06/x
  3. Step 3: Cross multiply
    38,983.86x = 53,797.66 × 21,988.06
  4. Step 4: Simplify right side
    38,983.86x = 1,182,906,175.94
  5. Step 5: Solve for x
    x = 1,182,906,175.94/38,983.86
  6. Step 6: Final answer
    x = 30,343.49

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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.