Home / 31,579.30-47,360.31-11,856.34

Finding the Fourth Proportional to 31,579.30, 47,360.31 and 11,856.34

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Solution

The fourth proportional to 31,579.30, 47,360.31 and 11,856.34 is: 17,781.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,579.30 : 47,360.31 = 11,856.34 : x
  2. Step 2: Convert to fraction form
    31,579.30/47,360.31 = 11,856.34/x
  3. Step 3: Cross multiply
    31,579.30x = 47,360.31 × 11,856.34
  4. Step 4: Simplify right side
    31,579.30x = 561,519,937.87
  5. Step 5: Solve for x
    x = 561,519,937.87/31,579.30
  6. Step 6: Final answer
    x = 17,781.27

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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.