Home / 20,927.96-28,880.50-11,367.80

Finding the Fourth Proportional to 20,927.96, 28,880.50 and 11,367.80

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Solution

The fourth proportional to 20,927.96, 28,880.50 and 11,367.80 is: 15,687.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.96 : 28,880.50 = 11,367.80 : x
  2. Step 2: Convert to fraction form
    20,927.96/28,880.50 = 11,367.80/x
  3. Step 3: Cross multiply
    20,927.96x = 28,880.50 × 11,367.80
  4. Step 4: Simplify right side
    20,927.96x = 328,307,747.90
  5. Step 5: Solve for x
    x = 328,307,747.90/20,927.96
  6. Step 6: Final answer
    x = 15,687.52

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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.