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Finding the Fourth Proportional to 15,795, 21,797.37 and 10,215.72

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Solution

The fourth proportional to 15,795, 21,797.37 and 10,215.72 is: 14,097.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,795 : 21,797.37 = 10,215.72 : x
  2. Step 2: Convert to fraction form
    15,795/21,797.37 = 10,215.72/x
  3. Step 3: Cross multiply
    15,795x = 21,797.37 × 10,215.72
  4. Step 4: Simplify right side
    15,795x = 222,675,828.66
  5. Step 5: Solve for x
    x = 222,675,828.66/15,795
  6. Step 6: Final answer
    x = 14,097.87

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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.