Home / 19,110.24-28,667.20-7,424.40

Finding the Fourth Proportional to 19,110.24, 28,667.20 and 7,424.40

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Solution

The fourth proportional to 19,110.24, 28,667.20 and 7,424.40 is: 11,137.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,110.24 : 28,667.20 = 7,424.40 : x
  2. Step 2: Convert to fraction form
    19,110.24/28,667.20 = 7,424.40/x
  3. Step 3: Cross multiply
    19,110.24x = 28,667.20 × 7,424.40
  4. Step 4: Simplify right side
    19,110.24x = 212,836,759.68
  5. Step 5: Solve for x
    x = 212,836,759.68/19,110.24
  6. Step 6: Final answer
    x = 11,137.31

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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.