Home / 19,811.97-27,342.26-10,861.20

Finding the Fourth Proportional to 19,811.97, 27,342.26 and 10,861.20

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Solution

The fourth proportional to 19,811.97, 27,342.26 and 10,861.20 is: 14,989.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.97 : 27,342.26 = 10,861.20 : x
  2. Step 2: Convert to fraction form
    19,811.97/27,342.26 = 10,861.20/x
  3. Step 3: Cross multiply
    19,811.97x = 27,342.26 × 10,861.20
  4. Step 4: Simplify right side
    19,811.97x = 296,969,700.01
  5. Step 5: Solve for x
    x = 296,969,700.01/19,811.97
  6. Step 6: Final answer
    x = 14,989.41

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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.