Home / 38,928.49-53,721.31-21,023.49

Finding the Fourth Proportional to 38,928.49, 53,721.31 and 21,023.49

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Solution

The fourth proportional to 38,928.49, 53,721.31 and 21,023.49 is: 29,012.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,928.49 : 53,721.31 = 21,023.49 : x
  2. Step 2: Convert to fraction form
    38,928.49/53,721.31 = 21,023.49/x
  3. Step 3: Cross multiply
    38,928.49x = 53,721.31 × 21,023.49
  4. Step 4: Simplify right side
    38,928.49x = 1,129,409,371.01
  5. Step 5: Solve for x
    x = 1,129,409,371.01/38,928.49
  6. Step 6: Final answer
    x = 29,012.41

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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.