Home / 10,865.40-16,285.44-5,009.70

Finding the Fourth Proportional to 10,865.40, 16,285.44 and 5,009.70

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Solution

The fourth proportional to 10,865.40, 16,285.44 and 5,009.70 is: 7,508.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865.40 : 16,285.44 = 5,009.70 : x
  2. Step 2: Convert to fraction form
    10,865.40/16,285.44 = 5,009.70/x
  3. Step 3: Cross multiply
    10,865.40x = 16,285.44 × 5,009.70
  4. Step 4: Simplify right side
    10,865.40x = 81,585,168.77
  5. Step 5: Solve for x
    x = 81,585,168.77/10,865.40
  6. Step 6: Final answer
    x = 7,508.71

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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.