Home / 18,989.13-26,206.03-11,437.81

Finding the Fourth Proportional to 18,989.13, 26,206.03 and 11,437.81

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Solution

The fourth proportional to 18,989.13, 26,206.03 and 11,437.81 is: 15,784.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.13 : 26,206.03 = 11,437.81 : x
  2. Step 2: Convert to fraction form
    18,989.13/26,206.03 = 11,437.81/x
  3. Step 3: Cross multiply
    18,989.13x = 26,206.03 × 11,437.81
  4. Step 4: Simplify right side
    18,989.13x = 299,739,540.78
  5. Step 5: Solve for x
    x = 299,739,540.78/18,989.13
  6. Step 6: Final answer
    x = 15,784.79

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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.