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Finding the Fourth Proportional to 10,754.40, 16,128.40 and 4,176.80

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Solution

The fourth proportional to 10,754.40, 16,128.40 and 4,176.80 is: 6,263.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,754.40 : 16,128.40 = 4,176.80 : x
  2. Step 2: Convert to fraction form
    10,754.40/16,128.40 = 4,176.80/x
  3. Step 3: Cross multiply
    10,754.40x = 16,128.40 × 4,176.80
  4. Step 4: Simplify right side
    10,754.40x = 67,365,101.12
  5. Step 5: Solve for x
    x = 67,365,101.12/10,754.40
  6. Step 6: Final answer
    x = 6,263.96

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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.