Home / 31,961.36-47,921.28-13,236.32

Finding the Fourth Proportional to 31,961.36, 47,921.28 and 13,236.32

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Solution

The fourth proportional to 31,961.36, 47,921.28 and 13,236.32 is: 19,845.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,961.36 : 47,921.28 = 13,236.32 : x
  2. Step 2: Convert to fraction form
    31,961.36/47,921.28 = 13,236.32/x
  3. Step 3: Cross multiply
    31,961.36x = 47,921.28 × 13,236.32
  4. Step 4: Simplify right side
    31,961.36x = 634,301,396.89
  5. Step 5: Solve for x
    x = 634,301,396.89/31,961.36
  6. Step 6: Final answer
    x = 19,845.88

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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.