Home / 30,983.86-42,757.98-16,836.70

Finding the Fourth Proportional to 30,983.86, 42,757.98 and 16,836.70

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Solution

The fourth proportional to 30,983.86, 42,757.98 and 16,836.70 is: 23,234.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,983.86 : 42,757.98 = 16,836.70 : x
  2. Step 2: Convert to fraction form
    30,983.86/42,757.98 = 16,836.70/x
  3. Step 3: Cross multiply
    30,983.86x = 42,757.98 × 16,836.70
  4. Step 4: Simplify right side
    30,983.86x = 719,903,281.87
  5. Step 5: Solve for x
    x = 719,903,281.87/30,983.86
  6. Step 6: Final answer
    x = 23,234.78

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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.