Home / 11,860.24-16,359.20-7,139.60

Finding the Fourth Proportional to 11,860.24, 16,359.20 and 7,139.60

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Solution

The fourth proportional to 11,860.24, 16,359.20 and 7,139.60 is: 9,847.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,860.24 : 16,359.20 = 7,139.60 : x
  2. Step 2: Convert to fraction form
    11,860.24/16,359.20 = 7,139.60/x
  3. Step 3: Cross multiply
    11,860.24x = 16,359.20 × 7,139.60
  4. Step 4: Simplify right side
    11,860.24x = 116,798,144.32
  5. Step 5: Solve for x
    x = 116,798,144.32/11,860.24
  6. Step 6: Final answer
    x = 9,847.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.