Home / 30,983.78-42,757.90-16,836.64

Finding the Fourth Proportional to 30,983.78, 42,757.90 and 16,836.64

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Solution

The fourth proportional to 30,983.78, 42,757.90 and 16,836.64 is: 23,234.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,983.78 : 42,757.90 = 16,836.64 : x
  2. Step 2: Convert to fraction form
    30,983.78/42,757.90 = 16,836.64/x
  3. Step 3: Cross multiply
    30,983.78x = 42,757.90 × 16,836.64
  4. Step 4: Simplify right side
    30,983.78x = 719,899,369.46
  5. Step 5: Solve for x
    x = 719,899,369.46/30,983.78
  6. Step 6: Final answer
    x = 23,234.72

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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.