Home / 19,359.92-29,020.27-13,120.57

Finding the Fourth Proportional to 19,359.92, 29,020.27 and 13,120.57

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Solution

The fourth proportional to 19,359.92, 29,020.27 and 13,120.57 is: 19,667.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,359.92 : 29,020.27 = 13,120.57 : x
  2. Step 2: Convert to fraction form
    19,359.92/29,020.27 = 13,120.57/x
  3. Step 3: Cross multiply
    19,359.92x = 29,020.27 × 13,120.57
  4. Step 4: Simplify right side
    19,359.92x = 380,762,483.95
  5. Step 5: Solve for x
    x = 380,762,483.95/19,359.92
  6. Step 6: Final answer
    x = 19,667.56

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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.