Home / 13,637.68-18,819.67-8,921.86

Finding the Fourth Proportional to 13,637.68, 18,819.67 and 8,921.86

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Solution

The fourth proportional to 13,637.68, 18,819.67 and 8,921.86 is: 12,311.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,637.68 : 18,819.67 = 8,921.86 : x
  2. Step 2: Convert to fraction form
    13,637.68/18,819.67 = 8,921.86/x
  3. Step 3: Cross multiply
    13,637.68x = 18,819.67 × 8,921.86
  4. Step 4: Simplify right side
    13,637.68x = 167,906,460.99
  5. Step 5: Solve for x
    x = 167,906,460.99/13,637.68
  6. Step 6: Final answer
    x = 12,311.95

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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.