Home / 13,454.48-20,168.76-4,218.32

Finding the Fourth Proportional to 13,454.48, 20,168.76 and 4,218.32

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Solution

The fourth proportional to 13,454.48, 20,168.76 and 4,218.32 is: 6,323.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,454.48 : 20,168.76 = 4,218.32 : x
  2. Step 2: Convert to fraction form
    13,454.48/20,168.76 = 4,218.32/x
  3. Step 3: Cross multiply
    13,454.48x = 20,168.76 × 4,218.32
  4. Step 4: Simplify right side
    13,454.48x = 85,078,283.68
  5. Step 5: Solve for x
    x = 85,078,283.68/13,454.48
  6. Step 6: Final answer
    x = 6,323.42

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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.