Home / 20,708.20-31,043.64-7,551.34

Finding the Fourth Proportional to 20,708.20, 31,043.64 and 7,551.34

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Solution

The fourth proportional to 20,708.20, 31,043.64 and 7,551.34 is: 11,320.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.20 : 31,043.64 = 7,551.34 : x
  2. Step 2: Convert to fraction form
    20,708.20/31,043.64 = 7,551.34/x
  3. Step 3: Cross multiply
    20,708.20x = 31,043.64 × 7,551.34
  4. Step 4: Simplify right side
    20,708.20x = 234,421,080.48
  5. Step 5: Solve for x
    x = 234,421,080.48/20,708.20
  6. Step 6: Final answer
    x = 11,320.21

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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.