Home / 20,515.88-28,311.93-11,084.46

Finding the Fourth Proportional to 20,515.88, 28,311.93 and 11,084.46

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Solution

The fourth proportional to 20,515.88, 28,311.93 and 11,084.46 is: 15,296.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.88 : 28,311.93 = 11,084.46 : x
  2. Step 2: Convert to fraction form
    20,515.88/28,311.93 = 11,084.46/x
  3. Step 3: Cross multiply
    20,515.88x = 28,311.93 × 11,084.46
  4. Step 4: Simplify right side
    20,515.88x = 313,822,455.61
  5. Step 5: Solve for x
    x = 313,822,455.61/20,515.88
  6. Step 6: Final answer
    x = 15,296.56

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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.