Home / 13,680.82-20,521.22-10,565.36

Finding the Fourth Proportional to 13,680.82, 20,521.22 and 10,565.36

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Solution

The fourth proportional to 13,680.82, 20,521.22 and 10,565.36 is: 15,848.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.82 : 20,521.22 = 10,565.36 : x
  2. Step 2: Convert to fraction form
    13,680.82/20,521.22 = 10,565.36/x
  3. Step 3: Cross multiply
    13,680.82x = 20,521.22 × 10,565.36
  4. Step 4: Simplify right side
    13,680.82x = 216,814,076.94
  5. Step 5: Solve for x
    x = 216,814,076.94/13,680.82
  6. Step 6: Final answer
    x = 15,848.03

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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.