Home / 12,389.05-17,096.75-6,723.81

Finding the Fourth Proportional to 12,389.05, 17,096.75 and 6,723.81

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Solution

The fourth proportional to 12,389.05, 17,096.75 and 6,723.81 is: 9,278.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.05 : 17,096.75 = 6,723.81 : x
  2. Step 2: Convert to fraction form
    12,389.05/17,096.75 = 6,723.81/x
  3. Step 3: Cross multiply
    12,389.05x = 17,096.75 × 6,723.81
  4. Step 4: Simplify right side
    12,389.05x = 114,955,290.21
  5. Step 5: Solve for x
    x = 114,955,290.21/12,389.05
  6. Step 6: Final answer
    x = 9,278.78

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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.