Home / 13,775.47-20,660.10-3,914.53

Finding the Fourth Proportional to 13,775.47, 20,660.10 and 3,914.53

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Solution

The fourth proportional to 13,775.47, 20,660.10 and 3,914.53 is: 5,870.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.47 : 20,660.10 = 3,914.53 : x
  2. Step 2: Convert to fraction form
    13,775.47/20,660.10 = 3,914.53/x
  3. Step 3: Cross multiply
    13,775.47x = 20,660.10 × 3,914.53
  4. Step 4: Simplify right side
    13,775.47x = 80,874,581.25
  5. Step 5: Solve for x
    x = 80,874,581.25/13,775.47
  6. Step 6: Final answer
    x = 5,870.91

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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.