Home / 13,872.22-20,810.40-5,106.47

Finding the Fourth Proportional to 13,872.22, 20,810.40 and 5,106.47

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Solution

The fourth proportional to 13,872.22, 20,810.40 and 5,106.47 is: 7,660.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.22 : 20,810.40 = 5,106.47 : x
  2. Step 2: Convert to fraction form
    13,872.22/20,810.40 = 5,106.47/x
  3. Step 3: Cross multiply
    13,872.22x = 20,810.40 × 5,106.47
  4. Step 4: Simplify right side
    13,872.22x = 106,267,569.66
  5. Step 5: Solve for x
    x = 106,267,569.66/13,872.22
  6. Step 6: Final answer
    x = 7,660.46

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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.