Home / 19,811.04-29,716.56-8,129.76

Finding the Fourth Proportional to 19,811.04, 29,716.56 and 8,129.76

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Solution

The fourth proportional to 19,811.04, 29,716.56 and 8,129.76 is: 12,194.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.04 : 29,716.56 = 8,129.76 : x
  2. Step 2: Convert to fraction form
    19,811.04/29,716.56 = 8,129.76/x
  3. Step 3: Cross multiply
    19,811.04x = 29,716.56 × 8,129.76
  4. Step 4: Simplify right side
    19,811.04x = 241,588,500.83
  5. Step 5: Solve for x
    x = 241,588,500.83/19,811.04
  6. Step 6: Final answer
    x = 12,194.64

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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.