Home / 31,487.60-47,231.32-11,767.70

Finding the Fourth Proportional to 31,487.60, 47,231.32 and 11,767.70

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Solution

The fourth proportional to 31,487.60, 47,231.32 and 11,767.70 is: 17,651.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,487.60 : 47,231.32 = 11,767.70 : x
  2. Step 2: Convert to fraction form
    31,487.60/47,231.32 = 11,767.70/x
  3. Step 3: Cross multiply
    31,487.60x = 47,231.32 × 11,767.70
  4. Step 4: Simplify right side
    31,487.60x = 555,804,004.36
  5. Step 5: Solve for x
    x = 555,804,004.36/31,487.60
  6. Step 6: Final answer
    x = 17,651.52

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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.