Home / 38,489.36-53,116.80-21,722

Finding the Fourth Proportional to 38,489.36, 53,116.80 and 21,722

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Solution

The fourth proportional to 38,489.36, 53,116.80 and 21,722 is: 29,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,489.36 : 53,116.80 = 21,722 : x
  2. Step 2: Convert to fraction form
    38,489.36/53,116.80 = 21,722/x
  3. Step 3: Cross multiply
    38,489.36x = 53,116.80 × 21,722
  4. Step 4: Simplify right side
    38,489.36x = 1,153,803,129.60
  5. Step 5: Solve for x
    x = 1,153,803,129.60/38,489.36
  6. Step 6: Final answer
    x = 29,977.20

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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.