Home / 20,257.79-30,389.92-8,571.11

Finding the Fourth Proportional to 20,257.79, 30,389.92 and 8,571.11

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Solution

The fourth proportional to 20,257.79, 30,389.92 and 8,571.11 is: 12,858.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,257.79 : 30,389.92 = 8,571.11 : x
  2. Step 2: Convert to fraction form
    20,257.79/30,389.92 = 8,571.11/x
  3. Step 3: Cross multiply
    20,257.79x = 30,389.92 × 8,571.11
  4. Step 4: Simplify right side
    20,257.79x = 260,475,173.83
  5. Step 5: Solve for x
    x = 260,475,173.83/20,257.79
  6. Step 6: Final answer
    x = 12,858.03

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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.