Home / 13,638.76-18,822.26-9,093.60

Finding the Fourth Proportional to 13,638.76, 18,822.26 and 9,093.60

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Solution

The fourth proportional to 13,638.76, 18,822.26 and 9,093.60 is: 12,549.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.76 : 18,822.26 = 9,093.60 : x
  2. Step 2: Convert to fraction form
    13,638.76/18,822.26 = 9,093.60/x
  3. Step 3: Cross multiply
    13,638.76x = 18,822.26 × 9,093.60
  4. Step 4: Simplify right side
    13,638.76x = 171,162,126.27
  5. Step 5: Solve for x
    x = 171,162,126.27/13,638.76
  6. Step 6: Final answer
    x = 12,549.69

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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.