Home / 18,730.28-28,095.30-4,879.28

Finding the Fourth Proportional to 18,730.28, 28,095.30 and 4,879.28

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Solution

The fourth proportional to 18,730.28, 28,095.30 and 4,879.28 is: 7,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.28 : 28,095.30 = 4,879.28 : x
  2. Step 2: Convert to fraction form
    18,730.28/28,095.30 = 4,879.28/x
  3. Step 3: Cross multiply
    18,730.28x = 28,095.30 × 4,879.28
  4. Step 4: Simplify right side
    18,730.28x = 137,084,835.38
  5. Step 5: Solve for x
    x = 137,084,835.38/18,730.28
  6. Step 6: Final answer
    x = 7,318.89

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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.