Home / 18,836.64-25,991.91-11,281.20

Finding the Fourth Proportional to 18,836.64, 25,991.91 and 11,281.20

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Solution

The fourth proportional to 18,836.64, 25,991.91 and 11,281.20 is: 15,566.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,836.64 : 25,991.91 = 11,281.20 : x
  2. Step 2: Convert to fraction form
    18,836.64/25,991.91 = 11,281.20/x
  3. Step 3: Cross multiply
    18,836.64x = 25,991.91 × 11,281.20
  4. Step 4: Simplify right side
    18,836.64x = 293,219,935.09
  5. Step 5: Solve for x
    x = 293,219,935.09/18,836.64
  6. Step 6: Final answer
    x = 15,566.47

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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.