Home / 30,850.39-42,566.22-18,750.66

Finding the Fourth Proportional to 30,850.39, 42,566.22 and 18,750.66

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Solution

The fourth proportional to 30,850.39, 42,566.22 and 18,750.66 is: 25,871.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,850.39 : 42,566.22 = 18,750.66 : x
  2. Step 2: Convert to fraction form
    30,850.39/42,566.22 = 18,750.66/x
  3. Step 3: Cross multiply
    30,850.39x = 42,566.22 × 18,750.66
  4. Step 4: Simplify right side
    30,850.39x = 798,144,878.33
  5. Step 5: Solve for x
    x = 798,144,878.33/30,850.39
  6. Step 6: Final answer
    x = 25,871.47

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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.