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Finding the Fourth Proportional to 13,957.92, 20,944.08 and 6,172.20

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Solution

The fourth proportional to 13,957.92, 20,944.08 and 6,172.20 is: 9,261.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,957.92 : 20,944.08 = 6,172.20 : x
  2. Step 2: Convert to fraction form
    13,957.92/20,944.08 = 6,172.20/x
  3. Step 3: Cross multiply
    13,957.92x = 20,944.08 × 6,172.20
  4. Step 4: Simplify right side
    13,957.92x = 129,271,050.58
  5. Step 5: Solve for x
    x = 129,271,050.58/13,957.92
  6. Step 6: Final answer
    x = 9,261.48

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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.