Home / 30,966.87-42,734.34-16,819.68

Finding the Fourth Proportional to 30,966.87, 42,734.34 and 16,819.68

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Solution

The fourth proportional to 30,966.87, 42,734.34 and 16,819.68 is: 23,211.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,966.87 : 42,734.34 = 16,819.68 : x
  2. Step 2: Convert to fraction form
    30,966.87/42,734.34 = 16,819.68/x
  3. Step 3: Cross multiply
    30,966.87x = 42,734.34 × 16,819.68
  4. Step 4: Simplify right side
    30,966.87x = 718,777,923.81
  5. Step 5: Solve for x
    x = 718,777,923.81/30,966.87
  6. Step 6: Final answer
    x = 23,211.19

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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.