Home / 10,911.36-16,369.56-3,985.92

Finding the Fourth Proportional to 10,911.36, 16,369.56 and 3,985.92

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Solution

The fourth proportional to 10,911.36, 16,369.56 and 3,985.92 is: 5,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.36 : 16,369.56 = 3,985.92 : x
  2. Step 2: Convert to fraction form
    10,911.36/16,369.56 = 3,985.92/x
  3. Step 3: Cross multiply
    10,911.36x = 16,369.56 × 3,985.92
  4. Step 4: Simplify right side
    10,911.36x = 65,247,756.60
  5. Step 5: Solve for x
    x = 65,247,756.60/10,911.36
  6. Step 6: Final answer
    x = 5,979.80

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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.