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Finding the Fourth Proportional to 28,073.84, 38,738.76 and 15,495.44

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Solution

The fourth proportional to 28,073.84, 38,738.76 and 15,495.44 is: 21,381.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,073.84 : 38,738.76 = 15,495.44 : x
  2. Step 2: Convert to fraction form
    28,073.84/38,738.76 = 15,495.44/x
  3. Step 3: Cross multiply
    28,073.84x = 38,738.76 × 15,495.44
  4. Step 4: Simplify right side
    28,073.84x = 600,274,131.25
  5. Step 5: Solve for x
    x = 600,274,131.25/28,073.84
  6. Step 6: Final answer
    x = 21,381.97

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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.