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Finding the Fourth Proportional to 28,079.84, 38,750 and 15,504.56

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Solution

The fourth proportional to 28,079.84, 38,750 and 15,504.56 is: 21,396.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.84 : 38,750 = 15,504.56 : x
  2. Step 2: Convert to fraction form
    28,079.84/38,750 = 15,504.56/x
  3. Step 3: Cross multiply
    28,079.84x = 38,750 × 15,504.56
  4. Step 4: Simplify right side
    28,079.84x = 600,801,700
  5. Step 5: Solve for x
    x = 600,801,700/28,079.84
  6. Step 6: Final answer
    x = 21,396.19

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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.