Home / 19,680.55-29,512.10-5,637.38

Finding the Fourth Proportional to 19,680.55, 29,512.10 and 5,637.38

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Solution

The fourth proportional to 19,680.55, 29,512.10 and 5,637.38 is: 8,453.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.55 : 29,512.10 = 5,637.38 : x
  2. Step 2: Convert to fraction form
    19,680.55/29,512.10 = 5,637.38/x
  3. Step 3: Cross multiply
    19,680.55x = 29,512.10 × 5,637.38
  4. Step 4: Simplify right side
    19,680.55x = 166,370,788.83
  5. Step 5: Solve for x
    x = 166,370,788.83/19,680.55
  6. Step 6: Final answer
    x = 8,453.57

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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.