Home / 15,795.65-21,790.54-9,418.61

Finding the Fourth Proportional to 15,795.65, 21,790.54 and 9,418.61

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Solution

The fourth proportional to 15,795.65, 21,790.54 and 9,418.61 is: 12,993.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,795.65 : 21,790.54 = 9,418.61 : x
  2. Step 2: Convert to fraction form
    15,795.65/21,790.54 = 9,418.61/x
  3. Step 3: Cross multiply
    15,795.65x = 21,790.54 × 9,418.61
  4. Step 4: Simplify right side
    15,795.65x = 205,236,597.95
  5. Step 5: Solve for x
    x = 205,236,597.95/15,795.65
  6. Step 6: Final answer
    x = 12,993.24

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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.