Home / 19,844.64-27,389.88-11,887.20

Finding the Fourth Proportional to 19,844.64, 27,389.88 and 11,887.20

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Solution

The fourth proportional to 19,844.64, 27,389.88 and 11,887.20 is: 16,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,844.64 : 27,389.88 = 11,887.20 : x
  2. Step 2: Convert to fraction form
    19,844.64/27,389.88 = 11,887.20/x
  3. Step 3: Cross multiply
    19,844.64x = 27,389.88 × 11,887.20
  4. Step 4: Simplify right side
    19,844.64x = 325,588,981.54
  5. Step 5: Solve for x
    x = 325,588,981.54/19,844.64
  6. Step 6: Final answer
    x = 16,406.90

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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.