Home / 38,638.34-53,321.59-21,642.44

Finding the Fourth Proportional to 38,638.34, 53,321.59 and 21,642.44

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Solution

The fourth proportional to 38,638.34, 53,321.59 and 21,642.44 is: 29,866.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,638.34 : 53,321.59 = 21,642.44 : x
  2. Step 2: Convert to fraction form
    38,638.34/53,321.59 = 21,642.44/x
  3. Step 3: Cross multiply
    38,638.34x = 53,321.59 × 21,642.44
  4. Step 4: Simplify right side
    38,638.34x = 1,154,009,391.48
  5. Step 5: Solve for x
    x = 1,154,009,391.48/38,638.34
  6. Step 6: Final answer
    x = 29,866.95

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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.