Home / 20,980.35-31,463.19-6,185.34

Finding the Fourth Proportional to 20,980.35, 31,463.19 and 6,185.34

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Solution

The fourth proportional to 20,980.35, 31,463.19 and 6,185.34 is: 9,275.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.35 : 31,463.19 = 6,185.34 : x
  2. Step 2: Convert to fraction form
    20,980.35/31,463.19 = 6,185.34/x
  3. Step 3: Cross multiply
    20,980.35x = 31,463.19 × 6,185.34
  4. Step 4: Simplify right side
    20,980.35x = 194,610,527.63
  5. Step 5: Solve for x
    x = 194,610,527.63/20,980.35
  6. Step 6: Final answer
    x = 9,275.85

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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.