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Finding the Fourth Proportional to 28,123.84, 38,819.25 and 16,801.24

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Solution

The fourth proportional to 28,123.84, 38,819.25 and 16,801.24 is: 23,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.84 : 38,819.25 = 16,801.24 : x
  2. Step 2: Convert to fraction form
    28,123.84/38,819.25 = 16,801.24/x
  3. Step 3: Cross multiply
    28,123.84x = 38,819.25 × 16,801.24
  4. Step 4: Simplify right side
    28,123.84x = 652,211,535.87
  5. Step 5: Solve for x
    x = 652,211,535.87/28,123.84
  6. Step 6: Final answer
    x = 23,190.70

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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.