Home / 20,793.74-28,685.37-15,119.69

Finding the Fourth Proportional to 20,793.74, 28,685.37 and 15,119.69

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Solution

The fourth proportional to 20,793.74, 28,685.37 and 15,119.69 is: 20,857.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.74 : 28,685.37 = 15,119.69 : x
  2. Step 2: Convert to fraction form
    20,793.74/28,685.37 = 15,119.69/x
  3. Step 3: Cross multiply
    20,793.74x = 28,685.37 × 15,119.69
  4. Step 4: Simplify right side
    20,793.74x = 433,713,901.94
  5. Step 5: Solve for x
    x = 433,713,901.94/20,793.74
  6. Step 6: Final answer
    x = 20,857.91

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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.