Home / 11,861.12-16,366.02-7,145.66

Finding the Fourth Proportional to 11,861.12, 16,366.02 and 7,145.66

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Solution

The fourth proportional to 11,861.12, 16,366.02 and 7,145.66 is: 9,859.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.12 : 16,366.02 = 7,145.66 : x
  2. Step 2: Convert to fraction form
    11,861.12/16,366.02 = 7,145.66/x
  3. Step 3: Cross multiply
    11,861.12x = 16,366.02 × 7,145.66
  4. Step 4: Simplify right side
    11,861.12x = 116,946,014.47
  5. Step 5: Solve for x
    x = 116,946,014.47/11,861.12
  6. Step 6: Final answer
    x = 9,859.61

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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.