Home / 31,410.20-47,042.40-21,495.80

Finding the Fourth Proportional to 31,410.20, 47,042.40 and 21,495.80

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Solution

The fourth proportional to 31,410.20, 47,042.40 and 21,495.80 is: 32,193.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,410.20 : 47,042.40 = 21,495.80 : x
  2. Step 2: Convert to fraction form
    31,410.20/47,042.40 = 21,495.80/x
  3. Step 3: Cross multiply
    31,410.20x = 47,042.40 × 21,495.80
  4. Step 4: Simplify right side
    31,410.20x = 1,011,214,021.92
  5. Step 5: Solve for x
    x = 1,011,214,021.92/31,410.20
  6. Step 6: Final answer
    x = 32,193.81

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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.