Home / 11,258.81-16,890.26-5,639.41

Finding the Fourth Proportional to 11,258.81, 16,890.26 and 5,639.41

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Solution

The fourth proportional to 11,258.81, 16,890.26 and 5,639.41 is: 8,460.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,258.81 : 16,890.26 = 5,639.41 : x
  2. Step 2: Convert to fraction form
    11,258.81/16,890.26 = 5,639.41/x
  3. Step 3: Cross multiply
    11,258.81x = 16,890.26 × 5,639.41
  4. Step 4: Simplify right side
    11,258.81x = 95,251,101.15
  5. Step 5: Solve for x
    x = 95,251,101.15/11,258.81
  6. Step 6: Final answer
    x = 8,460.14

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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.