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Finding the Fourth Proportional to 11,354.25, 15,668.87 and 6,386.25

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Solution

The fourth proportional to 11,354.25, 15,668.87 and 6,386.25 is: 8,813.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,354.25 : 15,668.87 = 6,386.25 : x
  2. Step 2: Convert to fraction form
    11,354.25/15,668.87 = 6,386.25/x
  3. Step 3: Cross multiply
    11,354.25x = 15,668.87 × 6,386.25
  4. Step 4: Simplify right side
    11,354.25x = 100,065,289.11
  5. Step 5: Solve for x
    x = 100,065,289.11/11,354.25
  6. Step 6: Final answer
    x = 8,813.03

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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.