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Finding the Fourth Proportional to 30,833.39, 42,550.04 and 16,686.20

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Solution

The fourth proportional to 30,833.39, 42,550.04 and 16,686.20 is: 23,026.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,833.39 : 42,550.04 = 16,686.20 : x
  2. Step 2: Convert to fraction form
    30,833.39/42,550.04 = 16,686.20/x
  3. Step 3: Cross multiply
    30,833.39x = 42,550.04 × 16,686.20
  4. Step 4: Simplify right side
    30,833.39x = 709,998,625.54
  5. Step 5: Solve for x
    x = 709,998,625.54/30,833.39
  6. Step 6: Final answer
    x = 23,026.94

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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.