Home / 30,885.92-42,622.60-16,738.76

Finding the Fourth Proportional to 30,885.92, 42,622.60 and 16,738.76

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Solution

The fourth proportional to 30,885.92, 42,622.60 and 16,738.76 is: 23,099.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,885.92 : 42,622.60 = 16,738.76 : x
  2. Step 2: Convert to fraction form
    30,885.92/42,622.60 = 16,738.76/x
  3. Step 3: Cross multiply
    30,885.92x = 42,622.60 × 16,738.76
  4. Step 4: Simplify right side
    30,885.92x = 713,449,471.98
  5. Step 5: Solve for x
    x = 713,449,471.98/30,885.92
  6. Step 6: Final answer
    x = 23,099.51

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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.