Home / 13,785.12-20,671.47-3,922.02

Finding the Fourth Proportional to 13,785.12, 20,671.47 and 3,922.02

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Solution

The fourth proportional to 13,785.12, 20,671.47 and 3,922.02 is: 5,881.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.12 : 20,671.47 = 3,922.02 : x
  2. Step 2: Convert to fraction form
    13,785.12/20,671.47 = 3,922.02/x
  3. Step 3: Cross multiply
    13,785.12x = 20,671.47 × 3,922.02
  4. Step 4: Simplify right side
    13,785.12x = 81,073,918.77
  5. Step 5: Solve for x
    x = 81,073,918.77/13,785.12
  6. Step 6: Final answer
    x = 5,881.26

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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.