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Finding the Fourth Proportional to 10,728.36, 14,807.53 and 6,751.80

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Solution

The fourth proportional to 10,728.36, 14,807.53 and 6,751.80 is: 9,318.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,728.36 : 14,807.53 = 6,751.80 : x
  2. Step 2: Convert to fraction form
    10,728.36/14,807.53 = 6,751.80/x
  3. Step 3: Cross multiply
    10,728.36x = 14,807.53 × 6,751.80
  4. Step 4: Simplify right side
    10,728.36x = 99,977,481.05
  5. Step 5: Solve for x
    x = 99,977,481.05/10,728.36
  6. Step 6: Final answer
    x = 9,318.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.