Home / 19,820.72-27,357.81-12,265.85

Finding the Fourth Proportional to 19,820.72, 27,357.81 and 12,265.85

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Solution

The fourth proportional to 19,820.72, 27,357.81 and 12,265.85 is: 16,930.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.72 : 27,357.81 = 12,265.85 : x
  2. Step 2: Convert to fraction form
    19,820.72/27,357.81 = 12,265.85/x
  3. Step 3: Cross multiply
    19,820.72x = 27,357.81 × 12,265.85
  4. Step 4: Simplify right side
    19,820.72x = 335,566,793.79
  5. Step 5: Solve for x
    x = 335,566,793.79/19,820.72
  6. Step 6: Final answer
    x = 16,930.10

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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.