Home / 38,712.48-53,427.27-21,721.31

Finding the Fourth Proportional to 38,712.48, 53,427.27 and 21,721.31

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Solution

The fourth proportional to 38,712.48, 53,427.27 and 21,721.31 is: 29,977.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,712.48 : 53,427.27 = 21,721.31 : x
  2. Step 2: Convert to fraction form
    38,712.48/53,427.27 = 21,721.31/x
  3. Step 3: Cross multiply
    38,712.48x = 53,427.27 × 21,721.31
  4. Step 4: Simplify right side
    38,712.48x = 1,160,510,548.23
  5. Step 5: Solve for x
    x = 1,160,510,548.23/38,712.48
  6. Step 6: Final answer
    x = 29,977.68

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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.