Home / 20,886.12-31,325.99-7,735.26

Finding the Fourth Proportional to 20,886.12, 31,325.99 and 7,735.26

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Solution

The fourth proportional to 20,886.12, 31,325.99 and 7,735.26 is: 11,601.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.12 : 31,325.99 = 7,735.26 : x
  2. Step 2: Convert to fraction form
    20,886.12/31,325.99 = 7,735.26/x
  3. Step 3: Cross multiply
    20,886.12x = 31,325.99 × 7,735.26
  4. Step 4: Simplify right side
    20,886.12x = 242,314,638.73
  5. Step 5: Solve for x
    x = 242,314,638.73/20,886.12
  6. Step 6: Final answer
    x = 11,601.71

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1.5x scale

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.