Home / 18,928.89-28,389.39-6,448.82

Finding the Fourth Proportional to 18,928.89, 28,389.39 and 6,448.82

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Solution

The fourth proportional to 18,928.89, 28,389.39 and 6,448.82 is: 9,671.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.89 : 28,389.39 = 6,448.82 : x
  2. Step 2: Convert to fraction form
    18,928.89/28,389.39 = 6,448.82/x
  3. Step 3: Cross multiply
    18,928.89x = 28,389.39 × 6,448.82
  4. Step 4: Simplify right side
    18,928.89x = 183,077,899.89
  5. Step 5: Solve for x
    x = 183,077,899.89/18,928.89
  6. Step 6: Final answer
    x = 9,671.88

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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.