Home / 11,007.20-15,182.16-6,816.80

Finding the Fourth Proportional to 11,007.20, 15,182.16 and 6,816.80

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Solution

The fourth proportional to 11,007.20, 15,182.16 and 6,816.80 is: 9,402.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,007.20 : 15,182.16 = 6,816.80 : x
  2. Step 2: Convert to fraction form
    11,007.20/15,182.16 = 6,816.80/x
  3. Step 3: Cross multiply
    11,007.20x = 15,182.16 × 6,816.80
  4. Step 4: Simplify right side
    11,007.20x = 103,493,748.29
  5. Step 5: Solve for x
    x = 103,493,748.29/11,007.20
  6. Step 6: Final answer
    x = 9,402.37

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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.