Home / 38,982.18-53,795.38-21,077.15

Finding the Fourth Proportional to 38,982.18, 53,795.38 and 21,077.15

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Solution

The fourth proportional to 38,982.18, 53,795.38 and 21,077.15 is: 29,086.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,982.18 : 53,795.38 = 21,077.15 : x
  2. Step 2: Convert to fraction form
    38,982.18/53,795.38 = 21,077.15/x
  3. Step 3: Cross multiply
    38,982.18x = 53,795.38 × 21,077.15
  4. Step 4: Simplify right side
    38,982.18x = 1,133,852,971.90
  5. Step 5: Solve for x
    x = 1,133,852,971.90/38,982.18
  6. Step 6: Final answer
    x = 29,086.44

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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.