Home / 39,414.32-59,129.76-13,121.12

Finding the Fourth Proportional to 39,414.32, 59,129.76 and 13,121.12

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Solution

The fourth proportional to 39,414.32, 59,129.76 and 13,121.12 is: 19,684.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,414.32 : 59,129.76 = 13,121.12 : x
  2. Step 2: Convert to fraction form
    39,414.32/59,129.76 = 13,121.12/x
  3. Step 3: Cross multiply
    39,414.32x = 59,129.76 × 13,121.12
  4. Step 4: Simplify right side
    39,414.32x = 775,848,676.53
  5. Step 5: Solve for x
    x = 775,848,676.53/39,414.32
  6. Step 6: Final answer
    x = 19,684.44

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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.