Home / 20,808.60-31,195.35-9,709.44

Finding the Fourth Proportional to 20,808.60, 31,195.35 and 9,709.44

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Solution

The fourth proportional to 20,808.60, 31,195.35 and 9,709.44 is: 14,555.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808.60 : 31,195.35 = 9,709.44 : x
  2. Step 2: Convert to fraction form
    20,808.60/31,195.35 = 9,709.44/x
  3. Step 3: Cross multiply
    20,808.60x = 31,195.35 × 9,709.44
  4. Step 4: Simplify right side
    20,808.60x = 302,889,379.10
  5. Step 5: Solve for x
    x = 302,889,379.10/20,808.60
  6. Step 6: Final answer
    x = 14,555.97

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1.5x scale

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.