Home / 18,968.24-28,472.40-10,655.36

Finding the Fourth Proportional to 18,968.24, 28,472.40 and 10,655.36

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Solution

The fourth proportional to 18,968.24, 28,472.40 and 10,655.36 is: 15,994.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.24 : 28,472.40 = 10,655.36 : x
  2. Step 2: Convert to fraction form
    18,968.24/28,472.40 = 10,655.36/x
  3. Step 3: Cross multiply
    18,968.24x = 28,472.40 × 10,655.36
  4. Step 4: Simplify right side
    18,968.24x = 303,383,672.06
  5. Step 5: Solve for x
    x = 303,383,672.06/18,968.24
  6. Step 6: Final answer
    x = 15,994.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.