Home / 21,103.11-29,095.93-15,433.31

Finding the Fourth Proportional to 21,103.11, 29,095.93 and 15,433.31

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Solution

The fourth proportional to 21,103.11, 29,095.93 and 15,433.31 is: 21,278.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.11 : 29,095.93 = 15,433.31 : x
  2. Step 2: Convert to fraction form
    21,103.11/29,095.93 = 15,433.31/x
  3. Step 3: Cross multiply
    21,103.11x = 29,095.93 × 15,433.31
  4. Step 4: Simplify right side
    21,103.11x = 449,046,507.43
  5. Step 5: Solve for x
    x = 449,046,507.43/21,103.11
  6. Step 6: Final answer
    x = 21,278.69

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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.