Home / 21,388.73-29,515.60-11,828.00

Finding the Fourth Proportional to 21,388.73, 29,515.60 and 11,828.00

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Solution

The fourth proportional to 21,388.73, 29,515.60 and 11,828.00 is: 16,322.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,388.73 : 29,515.60 = 11,828.00 : x
  2. Step 2: Convert to fraction form
    21,388.73/29,515.60 = 11,828.00/x
  3. Step 3: Cross multiply
    21,388.73x = 29,515.60 × 11,828.00
  4. Step 4: Simplify right side
    21,388.73x = 349,110,489.10
  5. Step 5: Solve for x
    x = 349,110,489.10/21,388.73
  6. Step 6: Final answer
    x = 16,322.17

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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.