Home / 21,039.08-29,033.30-11,479.16

Finding the Fourth Proportional to 21,039.08, 29,033.30 and 11,479.16

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Solution

The fourth proportional to 21,039.08, 29,033.30 and 11,479.16 is: 15,840.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039.08 : 29,033.30 = 11,479.16 : x
  2. Step 2: Convert to fraction form
    21,039.08/29,033.30 = 11,479.16/x
  3. Step 3: Cross multiply
    21,039.08x = 29,033.30 × 11,479.16
  4. Step 4: Simplify right side
    21,039.08x = 333,277,693.47
  5. Step 5: Solve for x
    x = 333,277,693.47/21,039.08
  6. Step 6: Final answer
    x = 15,840.89

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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.