Home / 38,948.86-53,749.36-21,043.81

Finding the Fourth Proportional to 38,948.86, 53,749.36 and 21,043.81

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Solution

The fourth proportional to 38,948.86, 53,749.36 and 21,043.81 is: 29,040.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,948.86 : 53,749.36 = 21,043.81 : x
  2. Step 2: Convert to fraction form
    38,948.86/53,749.36 = 21,043.81/x
  3. Step 3: Cross multiply
    38,948.86x = 53,749.36 × 21,043.81
  4. Step 4: Simplify right side
    38,948.86x = 1,131,091,319.46
  5. Step 5: Solve for x
    x = 1,131,091,319.46/38,948.86
  6. Step 6: Final answer
    x = 29,040.42

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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.