Home / 21,345.49-29,454.05-11,914.45

Finding the Fourth Proportional to 21,345.49, 29,454.05 and 11,914.45

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Solution

The fourth proportional to 21,345.49, 29,454.05 and 11,914.45 is: 16,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.49 : 29,454.05 = 11,914.45 : x
  2. Step 2: Convert to fraction form
    21,345.49/29,454.05 = 11,914.45/x
  3. Step 3: Cross multiply
    21,345.49x = 29,454.05 × 11,914.45
  4. Step 4: Simplify right side
    21,345.49x = 350,928,658.75
  5. Step 5: Solve for x
    x = 350,928,658.75/21,345.49
  6. Step 6: Final answer
    x = 16,440.42

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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.