Home / 20,695.14-31,043.28-6,656.58

Finding the Fourth Proportional to 20,695.14, 31,043.28 and 6,656.58

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Solution

The fourth proportional to 20,695.14, 31,043.28 and 6,656.58 is: 9,985.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.14 : 31,043.28 = 6,656.58 : x
  2. Step 2: Convert to fraction form
    20,695.14/31,043.28 = 6,656.58/x
  3. Step 3: Cross multiply
    20,695.14x = 31,043.28 × 6,656.58
  4. Step 4: Simplify right side
    20,695.14x = 206,642,076.78
  5. Step 5: Solve for x
    x = 206,642,076.78/20,695.14
  6. Step 6: Final answer
    x = 9,985.05

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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.