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Finding the Fourth Proportional to 15,065.31, 20,790.09 and 9,095.80

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Solution

The fourth proportional to 15,065.31, 20,790.09 and 9,095.80 is: 12,552.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,065.31 : 20,790.09 = 9,095.80 : x
  2. Step 2: Convert to fraction form
    15,065.31/20,790.09 = 9,095.80/x
  3. Step 3: Cross multiply
    15,065.31x = 20,790.09 × 9,095.80
  4. Step 4: Simplify right side
    15,065.31x = 189,102,500.62
  5. Step 5: Solve for x
    x = 189,102,500.62/15,065.31
  6. Step 6: Final answer
    x = 12,552.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.