Home / 12,818.80-19,222.42-5,419.45

Finding the Fourth Proportional to 12,818.80, 19,222.42 and 5,419.45

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Solution

The fourth proportional to 12,818.80, 19,222.42 and 5,419.45 is: 8,126.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.80 : 19,222.42 = 5,419.45 : x
  2. Step 2: Convert to fraction form
    12,818.80/19,222.42 = 5,419.45/x
  3. Step 3: Cross multiply
    12,818.80x = 19,222.42 × 5,419.45
  4. Step 4: Simplify right side
    12,818.80x = 104,174,944.07
  5. Step 5: Solve for x
    x = 104,174,944.07/12,818.80
  6. Step 6: Final answer
    x = 8,126.73

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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.