Home / 20,948.58-28,908.63-11,517.30

Finding the Fourth Proportional to 20,948.58, 28,908.63 and 11,517.30

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Solution

The fourth proportional to 20,948.58, 28,908.63 and 11,517.30 is: 15,893.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.58 : 28,908.63 = 11,517.30 : x
  2. Step 2: Convert to fraction form
    20,948.58/28,908.63 = 11,517.30/x
  3. Step 3: Cross multiply
    20,948.58x = 28,908.63 × 11,517.30
  4. Step 4: Simplify right side
    20,948.58x = 332,949,364.30
  5. Step 5: Solve for x
    x = 332,949,364.30/20,948.58
  6. Step 6: Final answer
    x = 15,893.65

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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.