Home / 30,210.39-41,689.71-16,781.25

Finding the Fourth Proportional to 30,210.39, 41,689.71 and 16,781.25

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Solution

The fourth proportional to 30,210.39, 41,689.71 and 16,781.25 is: 23,157.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.39 : 41,689.71 = 16,781.25 : x
  2. Step 2: Convert to fraction form
    30,210.39/41,689.71 = 16,781.25/x
  3. Step 3: Cross multiply
    30,210.39x = 41,689.71 × 16,781.25
  4. Step 4: Simplify right side
    30,210.39x = 699,605,445.94
  5. Step 5: Solve for x
    x = 699,605,445.94/30,210.39
  6. Step 6: Final answer
    x = 23,157.78

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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.