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Finding the Fourth Proportional to 28,887.22, 39,871.02 and 16,954.39

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Solution

The fourth proportional to 28,887.22, 39,871.02 and 16,954.39 is: 23,400.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887.22 : 39,871.02 = 16,954.39 : x
  2. Step 2: Convert to fraction form
    28,887.22/39,871.02 = 16,954.39/x
  3. Step 3: Cross multiply
    28,887.22x = 39,871.02 × 16,954.39
  4. Step 4: Simplify right side
    28,887.22x = 675,988,822.78
  5. Step 5: Solve for x
    x = 675,988,822.78/28,887.22
  6. Step 6: Final answer
    x = 23,400.96

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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.