Home / 28,161.66-38,841.39-19,660.98

Finding the Fourth Proportional to 28,161.66, 38,841.39 and 19,660.98

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Solution

The fourth proportional to 28,161.66, 38,841.39 and 19,660.98 is: 27,117.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.66 : 38,841.39 = 19,660.98 : x
  2. Step 2: Convert to fraction form
    28,161.66/38,841.39 = 19,660.98/x
  3. Step 3: Cross multiply
    28,161.66x = 38,841.39 × 19,660.98
  4. Step 4: Simplify right side
    28,161.66x = 763,659,791.96
  5. Step 5: Solve for x
    x = 763,659,791.96/28,161.66
  6. Step 6: Final answer
    x = 27,117.00

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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.