Home / 18,730.15-28,095.12-7,636.79

Finding the Fourth Proportional to 18,730.15, 28,095.12 and 7,636.79

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Solution

The fourth proportional to 18,730.15, 28,095.12 and 7,636.79 is: 11,455.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.15 : 28,095.12 = 7,636.79 : x
  2. Step 2: Convert to fraction form
    18,730.15/28,095.12 = 7,636.79/x
  3. Step 3: Cross multiply
    18,730.15x = 28,095.12 × 7,636.79
  4. Step 4: Simplify right side
    18,730.15x = 214,556,601.70
  5. Step 5: Solve for x
    x = 214,556,601.70/18,730.15
  6. Step 6: Final answer
    x = 11,455.15

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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.