Home / 38,654.09-53,342.84-21,658.36

Finding the Fourth Proportional to 38,654.09, 53,342.84 and 21,658.36

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Solution

The fourth proportional to 38,654.09, 53,342.84 and 21,658.36 is: 29,888.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,654.09 : 53,342.84 = 21,658.36 : x
  2. Step 2: Convert to fraction form
    38,654.09/53,342.84 = 21,658.36/x
  3. Step 3: Cross multiply
    38,654.09x = 53,342.84 × 21,658.36
  4. Step 4: Simplify right side
    38,654.09x = 1,155,318,323.85
  5. Step 5: Solve for x
    x = 1,155,318,323.85/38,654.09
  6. Step 6: Final answer
    x = 29,888.65

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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.