Home / 18,731.79-25,797.56-15,559.02

Finding the Fourth Proportional to 18,731.79, 25,797.56 and 15,559.02

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Solution

The fourth proportional to 18,731.79, 25,797.56 and 15,559.02 is: 21,427.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.79 : 25,797.56 = 15,559.02 : x
  2. Step 2: Convert to fraction form
    18,731.79/25,797.56 = 15,559.02/x
  3. Step 3: Cross multiply
    18,731.79x = 25,797.56 × 15,559.02
  4. Step 4: Simplify right side
    18,731.79x = 401,384,674.20
  5. Step 5: Solve for x
    x = 401,384,674.20/18,731.79
  6. Step 6: Final answer
    x = 21,427.99

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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.