Home / 15,905.92-23,859.12-4,220.80

Finding the Fourth Proportional to 15,905.92, 23,859.12 and 4,220.80

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Solution

The fourth proportional to 15,905.92, 23,859.12 and 4,220.80 is: 6,331.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.92 : 23,859.12 = 4,220.80 : x
  2. Step 2: Convert to fraction form
    15,905.92/23,859.12 = 4,220.80/x
  3. Step 3: Cross multiply
    15,905.92x = 23,859.12 × 4,220.80
  4. Step 4: Simplify right side
    15,905.92x = 100,704,573.70
  5. Step 5: Solve for x
    x = 100,704,573.70/15,905.92
  6. Step 6: Final answer
    x = 6,331.26

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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.