Home / 10,911.85-16,365.61-4,986.91

Finding the Fourth Proportional to 10,911.85, 16,365.61 and 4,986.91

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Solution

The fourth proportional to 10,911.85, 16,365.61 and 4,986.91 is: 7,479.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.85 : 16,365.61 = 4,986.91 : x
  2. Step 2: Convert to fraction form
    10,911.85/16,365.61 = 4,986.91/x
  3. Step 3: Cross multiply
    10,911.85x = 16,365.61 × 4,986.91
  4. Step 4: Simplify right side
    10,911.85x = 81,613,824.17
  5. Step 5: Solve for x
    x = 81,613,824.17/10,911.85
  6. Step 6: Final answer
    x = 7,479.38

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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.