Home / 28,019.73-38,666.97-15,272.91

Finding the Fourth Proportional to 28,019.73, 38,666.97 and 15,272.91

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Solution

The fourth proportional to 28,019.73, 38,666.97 and 15,272.91 is: 21,076.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.73 : 38,666.97 = 15,272.91 : x
  2. Step 2: Convert to fraction form
    28,019.73/38,666.97 = 15,272.91/x
  3. Step 3: Cross multiply
    28,019.73x = 38,666.97 × 15,272.91
  4. Step 4: Simplify right side
    28,019.73x = 590,557,123.54
  5. Step 5: Solve for x
    x = 590,557,123.54/28,019.73
  6. Step 6: Final answer
    x = 21,076.48

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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.