Home / 14,990.06-20,687.22-8,618.68

Finding the Fourth Proportional to 14,990.06, 20,687.22 and 8,618.68

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Solution

The fourth proportional to 14,990.06, 20,687.22 and 8,618.68 is: 11,894.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.06 : 20,687.22 = 8,618.68 : x
  2. Step 2: Convert to fraction form
    14,990.06/20,687.22 = 8,618.68/x
  3. Step 3: Cross multiply
    14,990.06x = 20,687.22 × 8,618.68
  4. Step 4: Simplify right side
    14,990.06x = 178,296,529.27
  5. Step 5: Solve for x
    x = 178,296,529.27/14,990.06
  6. Step 6: Final answer
    x = 11,894.32

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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.