Home / 30,981.96-42,755.34-16,834.86

Finding the Fourth Proportional to 30,981.96, 42,755.34 and 16,834.86

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Solution

The fourth proportional to 30,981.96, 42,755.34 and 16,834.86 is: 23,232.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.96 : 42,755.34 = 16,834.86 : x
  2. Step 2: Convert to fraction form
    30,981.96/42,755.34 = 16,834.86/x
  3. Step 3: Cross multiply
    30,981.96x = 42,755.34 × 16,834.86
  4. Step 4: Simplify right side
    30,981.96x = 719,780,163.15
  5. Step 5: Solve for x
    x = 719,780,163.15/30,981.96
  6. Step 6: Final answer
    x = 23,232.23

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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.