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Finding the Fourth Proportional to 28,480, 39,301.98 and 16,550.05

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Solution

The fourth proportional to 28,480, 39,301.98 and 16,550.05 is: 22,838.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,480 : 39,301.98 = 16,550.05 : x
  2. Step 2: Convert to fraction form
    28,480/39,301.98 = 16,550.05/x
  3. Step 3: Cross multiply
    28,480x = 39,301.98 × 16,550.05
  4. Step 4: Simplify right side
    28,480x = 650,449,734.10
  5. Step 5: Solve for x
    x = 650,449,734.10/28,480
  6. Step 6: Final answer
    x = 22,838.82

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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.