Home / 12,558.24-18,837.36-7,361.28

Finding the Fourth Proportional to 12,558.24, 18,837.36 and 7,361.28

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Solution

The fourth proportional to 12,558.24, 18,837.36 and 7,361.28 is: 11,041.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.24 : 18,837.36 = 7,361.28 : x
  2. Step 2: Convert to fraction form
    12,558.24/18,837.36 = 7,361.28/x
  3. Step 3: Cross multiply
    12,558.24x = 18,837.36 × 7,361.28
  4. Step 4: Simplify right side
    12,558.24x = 138,667,081.42
  5. Step 5: Solve for x
    x = 138,667,081.42/12,558.24
  6. Step 6: Final answer
    x = 11,041.92

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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.