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Finding the Fourth Proportional to 38,788.88, 53,528.65 and 22,021.88

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Solution

The fourth proportional to 38,788.88, 53,528.65 and 22,021.88 is: 30,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,788.88 : 53,528.65 = 22,021.88 : x
  2. Step 2: Convert to fraction form
    38,788.88/53,528.65 = 22,021.88/x
  3. Step 3: Cross multiply
    38,788.88x = 53,528.65 × 22,021.88
  4. Step 4: Simplify right side
    38,788.88x = 1,178,801,184.16
  5. Step 5: Solve for x
    x = 1,178,801,184.16/38,788.88
  6. Step 6: Final answer
    x = 30,390.19

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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.