Home / 13,664.22-18,859.68-8,945.76

Finding the Fourth Proportional to 13,664.22, 18,859.68 and 8,945.76

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Solution

The fourth proportional to 13,664.22, 18,859.68 and 8,945.76 is: 12,347.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.22 : 18,859.68 = 8,945.76 : x
  2. Step 2: Convert to fraction form
    13,664.22/18,859.68 = 8,945.76/x
  3. Step 3: Cross multiply
    13,664.22x = 18,859.68 × 8,945.76
  4. Step 4: Simplify right side
    13,664.22x = 168,714,170.96
  5. Step 5: Solve for x
    x = 168,714,170.96/13,664.22
  6. Step 6: Final answer
    x = 12,347.15

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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.