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Finding the Fourth Proportional to 10,728.40, 16,093.80 and 3,332.80

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Solution

The fourth proportional to 10,728.40, 16,093.80 and 3,332.80 is: 4,999.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,728.40 : 16,093.80 = 3,332.80 : x
  2. Step 2: Convert to fraction form
    10,728.40/16,093.80 = 3,332.80/x
  3. Step 3: Cross multiply
    10,728.40x = 16,093.80 × 3,332.80
  4. Step 4: Simplify right side
    10,728.40x = 53,637,416.64
  5. Step 5: Solve for x
    x = 53,637,416.64/10,728.40
  6. Step 6: Final answer
    x = 4,999.57

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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.