Home / 18,820.84-28,227.14-7,716.60

Finding the Fourth Proportional to 18,820.84, 28,227.14 and 7,716.60

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Solution

The fourth proportional to 18,820.84, 28,227.14 and 7,716.60 is: 11,573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.84 : 28,227.14 = 7,716.60 : x
  2. Step 2: Convert to fraction form
    18,820.84/28,227.14 = 7,716.60/x
  3. Step 3: Cross multiply
    18,820.84x = 28,227.14 × 7,716.60
  4. Step 4: Simplify right side
    18,820.84x = 217,817,548.52
  5. Step 5: Solve for x
    x = 217,817,548.52/18,820.84
  6. Step 6: Final answer
    x = 11,573.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.