Home / 27,654.40-38,165.34-15,721.48

Finding the Fourth Proportional to 27,654.40, 38,165.34 and 15,721.48

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Solution

The fourth proportional to 27,654.40, 38,165.34 and 15,721.48 is: 21,696.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,654.40 : 38,165.34 = 15,721.48 : x
  2. Step 2: Convert to fraction form
    27,654.40/38,165.34 = 15,721.48/x
  3. Step 3: Cross multiply
    27,654.40x = 38,165.34 × 15,721.48
  4. Step 4: Simplify right side
    27,654.40x = 600,015,629.50
  5. Step 5: Solve for x
    x = 600,015,629.50/27,654.40
  6. Step 6: Final answer
    x = 21,696.93

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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.