Home / 11,389.28-15,716.01-6,672.68

Finding the Fourth Proportional to 11,389.28, 15,716.01 and 6,672.68

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Solution

The fourth proportional to 11,389.28, 15,716.01 and 6,672.68 is: 9,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.28 : 15,716.01 = 6,672.68 : x
  2. Step 2: Convert to fraction form
    11,389.28/15,716.01 = 6,672.68/x
  3. Step 3: Cross multiply
    11,389.28x = 15,716.01 × 6,672.68
  4. Step 4: Simplify right side
    11,389.28x = 104,867,905.61
  5. Step 5: Solve for x
    x = 104,867,905.61/11,389.28
  6. Step 6: Final answer
    x = 9,207.60

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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.