Home / 13,262.22-18,302.76-8,778.15

Finding the Fourth Proportional to 13,262.22, 18,302.76 and 8,778.15

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Solution

The fourth proportional to 13,262.22, 18,302.76 and 8,778.15 is: 12,114.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,262.22 : 18,302.76 = 8,778.15 : x
  2. Step 2: Convert to fraction form
    13,262.22/18,302.76 = 8,778.15/x
  3. Step 3: Cross multiply
    13,262.22x = 18,302.76 × 8,778.15
  4. Step 4: Simplify right side
    13,262.22x = 160,664,372.69
  5. Step 5: Solve for x
    x = 160,664,372.69/13,262.22
  6. Step 6: Final answer
    x = 12,114.44

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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.