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Finding the Fourth Proportional to 18,491.10, 27,739.38 and 6,803.46

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Solution

The fourth proportional to 18,491.10, 27,739.38 and 6,803.46 is: 10,206.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.10 : 27,739.38 = 6,803.46 : x
  2. Step 2: Convert to fraction form
    18,491.10/27,739.38 = 6,803.46/x
  3. Step 3: Cross multiply
    18,491.10x = 27,739.38 × 6,803.46
  4. Step 4: Simplify right side
    18,491.10x = 188,723,762.25
  5. Step 5: Solve for x
    x = 188,723,762.25/18,491.10
  6. Step 6: Final answer
    x = 10,206.19

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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.