Home / 13,785.47-20,675.10-3,924.53

Finding the Fourth Proportional to 13,785.47, 20,675.10 and 3,924.53

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Solution

The fourth proportional to 13,785.47, 20,675.10 and 3,924.53 is: 5,885.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.47 : 20,675.10 = 3,924.53 : x
  2. Step 2: Convert to fraction form
    13,785.47/20,675.10 = 3,924.53/x
  3. Step 3: Cross multiply
    13,785.47x = 20,675.10 × 3,924.53
  4. Step 4: Simplify right side
    13,785.47x = 81,140,050.20
  5. Step 5: Solve for x
    x = 81,140,050.20/13,785.47
  6. Step 6: Final answer
    x = 5,885.91

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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.