Home / 10,917.20-16,376.64-3,898.70

Finding the Fourth Proportional to 10,917.20, 16,376.64 and 3,898.70

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Solution

The fourth proportional to 10,917.20, 16,376.64 and 3,898.70 is: 5,848.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,917.20 : 16,376.64 = 3,898.70 : x
  2. Step 2: Convert to fraction form
    10,917.20/16,376.64 = 3,898.70/x
  3. Step 3: Cross multiply
    10,917.20x = 16,376.64 × 3,898.70
  4. Step 4: Simplify right side
    10,917.20x = 63,847,606.37
  5. Step 5: Solve for x
    x = 63,847,606.37/10,917.20
  6. Step 6: Final answer
    x = 5,848.35

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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.