Home / 14,974.64-20,660.46-8,685.80

Finding the Fourth Proportional to 14,974.64, 20,660.46 and 8,685.80

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Solution

The fourth proportional to 14,974.64, 20,660.46 and 8,685.80 is: 11,983.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,974.64 : 20,660.46 = 8,685.80 : x
  2. Step 2: Convert to fraction form
    14,974.64/20,660.46 = 8,685.80/x
  3. Step 3: Cross multiply
    14,974.64x = 20,660.46 × 8,685.80
  4. Step 4: Simplify right side
    14,974.64x = 179,452,623.47
  5. Step 5: Solve for x
    x = 179,452,623.47/14,974.64
  6. Step 6: Final answer
    x = 11,983.77

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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.