Home / 12,864.09-19,296.18-4,099.80

Finding the Fourth Proportional to 12,864.09, 19,296.18 and 4,099.80

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Solution

The fourth proportional to 12,864.09, 19,296.18 and 4,099.80 is: 6,149.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.09 : 19,296.18 = 4,099.80 : x
  2. Step 2: Convert to fraction form
    12,864.09/19,296.18 = 4,099.80/x
  3. Step 3: Cross multiply
    12,864.09x = 19,296.18 × 4,099.80
  4. Step 4: Simplify right side
    12,864.09x = 79,110,478.76
  5. Step 5: Solve for x
    x = 79,110,478.76/12,864.09
  6. Step 6: Final answer
    x = 6,149.71

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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.