Home / 20,569.74-30,860.42-5,778.79

Finding the Fourth Proportional to 20,569.74, 30,860.42 and 5,778.79

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Solution

The fourth proportional to 20,569.74, 30,860.42 and 5,778.79 is: 8,669.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.74 : 30,860.42 = 5,778.79 : x
  2. Step 2: Convert to fraction form
    20,569.74/30,860.42 = 5,778.79/x
  3. Step 3: Cross multiply
    20,569.74x = 30,860.42 × 5,778.79
  4. Step 4: Simplify right side
    20,569.74x = 178,335,812.95
  5. Step 5: Solve for x
    x = 178,335,812.95/20,569.74
  6. Step 6: Final answer
    x = 8,669.81

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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.