Home / 21,345.14-29,456.61-11,914.42

Finding the Fourth Proportional to 21,345.14, 29,456.61 and 11,914.42

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Solution

The fourth proportional to 21,345.14, 29,456.61 and 11,914.42 is: 16,442.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.14 : 29,456.61 = 11,914.42 : x
  2. Step 2: Convert to fraction form
    21,345.14/29,456.61 = 11,914.42/x
  3. Step 3: Cross multiply
    21,345.14x = 29,456.61 × 11,914.42
  4. Step 4: Simplify right side
    21,345.14x = 350,958,423.32
  5. Step 5: Solve for x
    x = 350,958,423.32/21,345.14
  6. Step 6: Final answer
    x = 16,442.08

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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.