Home / 30,967.24-42,734.86-16,819.78

Finding the Fourth Proportional to 30,967.24, 42,734.86 and 16,819.78

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Solution

The fourth proportional to 30,967.24, 42,734.86 and 16,819.78 is: 23,211.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,967.24 : 42,734.86 = 16,819.78 : x
  2. Step 2: Convert to fraction form
    30,967.24/42,734.86 = 16,819.78/x
  3. Step 3: Cross multiply
    30,967.24x = 42,734.86 × 16,819.78
  4. Step 4: Simplify right side
    30,967.24x = 718,790,943.53
  5. Step 5: Solve for x
    x = 718,790,943.53/30,967.24
  6. Step 6: Final answer
    x = 23,211.33

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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.