Home / 10,851.20-14,976.25-6,872.68

Finding the Fourth Proportional to 10,851.20, 14,976.25 and 6,872.68

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Solution

The fourth proportional to 10,851.20, 14,976.25 and 6,872.68 is: 9,485.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,851.20 : 14,976.25 = 6,872.68 : x
  2. Step 2: Convert to fraction form
    10,851.20/14,976.25 = 6,872.68/x
  3. Step 3: Cross multiply
    10,851.20x = 14,976.25 × 6,872.68
  4. Step 4: Simplify right side
    10,851.20x = 102,926,939.49
  5. Step 5: Solve for x
    x = 102,926,939.49/10,851.20
  6. Step 6: Final answer
    x = 9,485.31

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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.