Home / 10,871.70-16,289.58-9,963.78

Finding the Fourth Proportional to 10,871.70, 16,289.58 and 9,963.78

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Solution

The fourth proportional to 10,871.70, 16,289.58 and 9,963.78 is: 14,929.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,871.70 : 16,289.58 = 9,963.78 : x
  2. Step 2: Convert to fraction form
    10,871.70/16,289.58 = 9,963.78/x
  3. Step 3: Cross multiply
    10,871.70x = 16,289.58 × 9,963.78
  4. Step 4: Simplify right side
    10,871.70x = 162,305,791.41
  5. Step 5: Solve for x
    x = 162,305,791.41/10,871.70
  6. Step 6: Final answer
    x = 14,929.20

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1.5x scale

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.