Home / 20,984.49-28,959.21-11,424.99

Finding the Fourth Proportional to 20,984.49, 28,959.21 and 11,424.99

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Solution

The fourth proportional to 20,984.49, 28,959.21 and 11,424.99 is: 15,766.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.49 : 28,959.21 = 11,424.99 : x
  2. Step 2: Convert to fraction form
    20,984.49/28,959.21 = 11,424.99/x
  3. Step 3: Cross multiply
    20,984.49x = 28,959.21 × 11,424.99
  4. Step 4: Simplify right side
    20,984.49x = 330,858,684.66
  5. Step 5: Solve for x
    x = 330,858,684.66/20,984.49
  6. Step 6: Final answer
    x = 15,766.82

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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.