Home / 13,872.31-20,808.61-4,011.68

Finding the Fourth Proportional to 13,872.31, 20,808.61 and 4,011.68

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Solution

The fourth proportional to 13,872.31, 20,808.61 and 4,011.68 is: 6,017.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.31 : 20,808.61 = 4,011.68 : x
  2. Step 2: Convert to fraction form
    13,872.31/20,808.61 = 4,011.68/x
  3. Step 3: Cross multiply
    13,872.31x = 20,808.61 × 4,011.68
  4. Step 4: Simplify right side
    13,872.31x = 83,477,370.49
  5. Step 5: Solve for x
    x = 83,477,370.49/13,872.31
  6. Step 6: Final answer
    x = 6,017.55

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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.