Home / 38,421.12-53,021.56-21,654.12

Finding the Fourth Proportional to 38,421.12, 53,021.56 and 21,654.12

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Solution

The fourth proportional to 38,421.12, 53,021.56 and 21,654.12 is: 29,882.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.12 : 53,021.56 = 21,654.12 : x
  2. Step 2: Convert to fraction form
    38,421.12/53,021.56 = 21,654.12/x
  3. Step 3: Cross multiply
    38,421.12x = 53,021.56 × 21,654.12
  4. Step 4: Simplify right side
    38,421.12x = 1,148,135,222.83
  5. Step 5: Solve for x
    x = 1,148,135,222.83/38,421.12
  6. Step 6: Final answer
    x = 29,882.92

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1.5x scale

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.