Home / 20,898.96-31,326.40-6,855.32

Finding the Fourth Proportional to 20,898.96, 31,326.40 and 6,855.32

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Solution

The fourth proportional to 20,898.96, 31,326.40 and 6,855.32 is: 10,275.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.96 : 31,326.40 = 6,855.32 : x
  2. Step 2: Convert to fraction form
    20,898.96/31,326.40 = 6,855.32/x
  3. Step 3: Cross multiply
    20,898.96x = 31,326.40 × 6,855.32
  4. Step 4: Simplify right side
    20,898.96x = 214,752,496.45
  5. Step 5: Solve for x
    x = 214,752,496.45/20,898.96
  6. Step 6: Final answer
    x = 10,275.75

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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.