Home / 38,658.06-53,346.60-21,891.06

Finding the Fourth Proportional to 38,658.06, 53,346.60 and 21,891.06

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Solution

The fourth proportional to 38,658.06, 53,346.60 and 21,891.06 is: 30,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,658.06 : 53,346.60 = 21,891.06 : x
  2. Step 2: Convert to fraction form
    38,658.06/53,346.60 = 21,891.06/x
  3. Step 3: Cross multiply
    38,658.06x = 53,346.60 × 21,891.06
  4. Step 4: Simplify right side
    38,658.06x = 1,167,813,621.40
  5. Step 5: Solve for x
    x = 1,167,813,621.40/38,658.06
  6. Step 6: Final answer
    x = 30,208.80

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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.