Home / 34,148.20-47,116.56-20,716.80

Finding the Fourth Proportional to 34,148.20, 47,116.56 and 20,716.80

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Solution

The fourth proportional to 34,148.20, 47,116.56 and 20,716.80 is: 28,584.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,148.20 : 47,116.56 = 20,716.80 : x
  2. Step 2: Convert to fraction form
    34,148.20/47,116.56 = 20,716.80/x
  3. Step 3: Cross multiply
    34,148.20x = 47,116.56 × 20,716.80
  4. Step 4: Simplify right side
    34,148.20x = 976,104,350.21
  5. Step 5: Solve for x
    x = 976,104,350.21/34,148.20
  6. Step 6: Final answer
    x = 28,584.36

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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.