Home / 18,829.76-28,244.80-4,789.80

Finding the Fourth Proportional to 18,829.76, 28,244.80 and 4,789.80

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Solution

The fourth proportional to 18,829.76, 28,244.80 and 4,789.80 is: 7,184.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829.76 : 28,244.80 = 4,789.80 : x
  2. Step 2: Convert to fraction form
    18,829.76/28,244.80 = 4,789.80/x
  3. Step 3: Cross multiply
    18,829.76x = 28,244.80 × 4,789.80
  4. Step 4: Simplify right side
    18,829.76x = 135,287,030.53
  5. Step 5: Solve for x
    x = 135,287,030.53/18,829.76
  6. Step 6: Final answer
    x = 7,184.74

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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.