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Finding the Fourth Proportional to 28,013.82, 38,661.48 and 15,441

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Solution

The fourth proportional to 28,013.82, 38,661.48 and 15,441 is: 21,309.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.82 : 38,661.48 = 15,441 : x
  2. Step 2: Convert to fraction form
    28,013.82/38,661.48 = 15,441/x
  3. Step 3: Cross multiply
    28,013.82x = 38,661.48 × 15,441
  4. Step 4: Simplify right side
    28,013.82x = 596,971,912.68
  5. Step 5: Solve for x
    x = 596,971,912.68/28,013.82
  6. Step 6: Final answer
    x = 21,309.91

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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.