Home / 18,818.31-28,228.86-6,338.28

Finding the Fourth Proportional to 18,818.31, 28,228.86 and 6,338.28

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Solution

The fourth proportional to 18,818.31, 28,228.86 and 6,338.28 is: 9,507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.31 : 28,228.86 = 6,338.28 : x
  2. Step 2: Convert to fraction form
    18,818.31/28,228.86 = 6,338.28/x
  3. Step 3: Cross multiply
    18,818.31x = 28,228.86 × 6,338.28
  4. Step 4: Simplify right side
    18,818.31x = 178,922,418.76
  5. Step 5: Solve for x
    x = 178,922,418.76/18,818.31
  6. Step 6: Final answer
    x = 9,507.89

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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.