Home / 20,711.04-31,064.40-5,919

Finding the Fourth Proportional to 20,711.04, 31,064.40 and 5,919

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Solution

The fourth proportional to 20,711.04, 31,064.40 and 5,919 is: 8,877.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.04 : 31,064.40 = 5,919 : x
  2. Step 2: Convert to fraction form
    20,711.04/31,064.40 = 5,919/x
  3. Step 3: Cross multiply
    20,711.04x = 31,064.40 × 5,919
  4. Step 4: Simplify right side
    20,711.04x = 183,870,183.60
  5. Step 5: Solve for x
    x = 183,870,183.60/20,711.04
  6. Step 6: Final answer
    x = 8,877.88

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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.