Home / 34,163.06-47,142.99-19,821.78

Finding the Fourth Proportional to 34,163.06, 47,142.99 and 19,821.78

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Solution

The fourth proportional to 34,163.06, 47,142.99 and 19,821.78 is: 27,352.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,163.06 : 47,142.99 = 19,821.78 : x
  2. Step 2: Convert to fraction form
    34,163.06/47,142.99 = 19,821.78/x
  3. Step 3: Cross multiply
    34,163.06x = 47,142.99 × 19,821.78
  4. Step 4: Simplify right side
    34,163.06x = 934,457,976.32
  5. Step 5: Solve for x
    x = 934,457,976.32/34,163.06
  6. Step 6: Final answer
    x = 27,352.88

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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.