Home / 19,801.52-27,293.55-15,815.60

Finding the Fourth Proportional to 19,801.52, 27,293.55 and 15,815.60

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Solution

The fourth proportional to 19,801.52, 27,293.55 and 15,815.60 is: 21,799.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,801.52 : 27,293.55 = 15,815.60 : x
  2. Step 2: Convert to fraction form
    19,801.52/27,293.55 = 15,815.60/x
  3. Step 3: Cross multiply
    19,801.52x = 27,293.55 × 15,815.60
  4. Step 4: Simplify right side
    19,801.52x = 431,663,869.38
  5. Step 5: Solve for x
    x = 431,663,869.38/19,801.52
  6. Step 6: Final answer
    x = 21,799.53

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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.