Home / 12,200.40-18,295.20-5,623.20

Finding the Fourth Proportional to 12,200.40, 18,295.20 and 5,623.20

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Solution

The fourth proportional to 12,200.40, 18,295.20 and 5,623.20 is: 8,432.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,200.40 : 18,295.20 = 5,623.20 : x
  2. Step 2: Convert to fraction form
    12,200.40/18,295.20 = 5,623.20/x
  3. Step 3: Cross multiply
    12,200.40x = 18,295.20 × 5,623.20
  4. Step 4: Simplify right side
    12,200.40x = 102,877,568.64
  5. Step 5: Solve for x
    x = 102,877,568.64/12,200.40
  6. Step 6: Final answer
    x = 8,432.31

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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.