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Finding the Fourth Proportional to 15,286, 21,083.65 and 9,317.92

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Solution

The fourth proportional to 15,286, 21,083.65 and 9,317.92 is: 12,852.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286 : 21,083.65 = 9,317.92 : x
  2. Step 2: Convert to fraction form
    15,286/21,083.65 = 9,317.92/x
  3. Step 3: Cross multiply
    15,286x = 21,083.65 × 9,317.92
  4. Step 4: Simplify right side
    15,286x = 196,455,764.01
  5. Step 5: Solve for x
    x = 196,455,764.01/15,286
  6. Step 6: Final answer
    x = 12,852.01

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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.