Home / 34,142.45-47,112.77-20,716.97

Finding the Fourth Proportional to 34,142.45, 47,112.77 and 20,716.97

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Solution

The fourth proportional to 34,142.45, 47,112.77 and 20,716.97 is: 28,587.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,142.45 : 47,112.77 = 20,716.97 : x
  2. Step 2: Convert to fraction form
    34,142.45/47,112.77 = 20,716.97/x
  3. Step 3: Cross multiply
    34,142.45x = 47,112.77 × 20,716.97
  4. Step 4: Simplify right side
    34,142.45x = 976,033,658.94
  5. Step 5: Solve for x
    x = 976,033,658.94/34,142.45
  6. Step 6: Final answer
    x = 28,587.10

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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.