Home / 31,699.20-47,471.04-21,279.36

Finding the Fourth Proportional to 31,699.20, 47,471.04 and 21,279.36

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Solution

The fourth proportional to 31,699.20, 47,471.04 and 21,279.36 is: 31,866.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,699.20 : 47,471.04 = 21,279.36 : x
  2. Step 2: Convert to fraction form
    31,699.20/47,471.04 = 21,279.36/x
  3. Step 3: Cross multiply
    31,699.20x = 47,471.04 × 21,279.36
  4. Step 4: Simplify right side
    31,699.20x = 1,010,153,349.73
  5. Step 5: Solve for x
    x = 1,010,153,349.73/31,699.20
  6. Step 6: Final answer
    x = 31,866.84

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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.