Home / 30,981.05-42,754.11-16,833.89

Finding the Fourth Proportional to 30,981.05, 42,754.11 and 16,833.89

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Solution

The fourth proportional to 30,981.05, 42,754.11 and 16,833.89 is: 23,230.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.05 : 42,754.11 = 16,833.89 : x
  2. Step 2: Convert to fraction form
    30,981.05/42,754.11 = 16,833.89/x
  3. Step 3: Cross multiply
    30,981.05x = 42,754.11 × 16,833.89
  4. Step 4: Simplify right side
    30,981.05x = 719,717,921.66
  5. Step 5: Solve for x
    x = 719,717,921.66/30,981.05
  6. Step 6: Final answer
    x = 23,230.91

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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.