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Finding the Fourth Proportional to 11,317.71, 16,971.07 and 6,639.25

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Solution

The fourth proportional to 11,317.71, 16,971.07 and 6,639.25 is: 9,955.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,317.71 : 16,971.07 = 6,639.25 : x
  2. Step 2: Convert to fraction form
    11,317.71/16,971.07 = 6,639.25/x
  3. Step 3: Cross multiply
    11,317.71x = 16,971.07 × 6,639.25
  4. Step 4: Simplify right side
    11,317.71x = 112,675,176.50
  5. Step 5: Solve for x
    x = 112,675,176.50/11,317.71
  6. Step 6: Final answer
    x = 9,955.65

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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.