Home / 21,405.33-29,539.10-11,844.50

Finding the Fourth Proportional to 21,405.33, 29,539.10 and 11,844.50

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Solution

The fourth proportional to 21,405.33, 29,539.10 and 11,844.50 is: 16,345.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.33 : 29,539.10 = 11,844.50 : x
  2. Step 2: Convert to fraction form
    21,405.33/29,539.10 = 11,844.50/x
  3. Step 3: Cross multiply
    21,405.33x = 29,539.10 × 11,844.50
  4. Step 4: Simplify right side
    21,405.33x = 349,875,751.87
  5. Step 5: Solve for x
    x = 349,875,751.87/21,405.33
  6. Step 6: Final answer
    x = 16,345.26

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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.