Home / 11,861.88-16,364.64-7,145.52

Finding the Fourth Proportional to 11,861.88, 16,364.64 and 7,145.52

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Solution

The fourth proportional to 11,861.88, 16,364.64 and 7,145.52 is: 9,857.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.88 : 16,364.64 = 7,145.52 : x
  2. Step 2: Convert to fraction form
    11,861.88/16,364.64 = 7,145.52/x
  3. Step 3: Cross multiply
    11,861.88x = 16,364.64 × 7,145.52
  4. Step 4: Simplify right side
    11,861.88x = 116,933,862.41
  5. Step 5: Solve for x
    x = 116,933,862.41/11,861.88
  6. Step 6: Final answer
    x = 9,857.95

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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.