Home / 20,709.12-31,060.20-5,914.68

Finding the Fourth Proportional to 20,709.12, 31,060.20 and 5,914.68

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Solution

The fourth proportional to 20,709.12, 31,060.20 and 5,914.68 is: 8,871.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.12 : 31,060.20 = 5,914.68 : x
  2. Step 2: Convert to fraction form
    20,709.12/31,060.20 = 5,914.68/x
  3. Step 3: Cross multiply
    20,709.12x = 31,060.20 × 5,914.68
  4. Step 4: Simplify right side
    20,709.12x = 183,711,143.74
  5. Step 5: Solve for x
    x = 183,711,143.74/20,709.12
  6. Step 6: Final answer
    x = 8,871.03

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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.