Home / 11,355.49-15,668.22-6,638.86

Finding the Fourth Proportional to 11,355.49, 15,668.22 and 6,638.86

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Solution

The fourth proportional to 11,355.49, 15,668.22 and 6,638.86 is: 9,160.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.49 : 15,668.22 = 6,638.86 : x
  2. Step 2: Convert to fraction form
    11,355.49/15,668.22 = 6,638.86/x
  3. Step 3: Cross multiply
    11,355.49x = 15,668.22 × 6,638.86
  4. Step 4: Simplify right side
    11,355.49x = 104,019,119.03
  5. Step 5: Solve for x
    x = 104,019,119.03/11,355.49
  6. Step 6: Final answer
    x = 9,160.25

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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.