Home / 13,485.70-20,223.42-4,122.87

Finding the Fourth Proportional to 13,485.70, 20,223.42 and 4,122.87

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Solution

The fourth proportional to 13,485.70, 20,223.42 and 4,122.87 is: 6,182.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.70 : 20,223.42 = 4,122.87 : x
  2. Step 2: Convert to fraction form
    13,485.70/20,223.42 = 4,122.87/x
  3. Step 3: Cross multiply
    13,485.70x = 20,223.42 × 4,122.87
  4. Step 4: Simplify right side
    13,485.70x = 83,378,531.62
  5. Step 5: Solve for x
    x = 83,378,531.62/13,485.70
  6. Step 6: Final answer
    x = 6,182.74

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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.