Home / 13,660.65-20,478.83-8,108.10

Finding the Fourth Proportional to 13,660.65, 20,478.83 and 8,108.10

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Solution

The fourth proportional to 13,660.65, 20,478.83 and 8,108.10 is: 12,154.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.65 : 20,478.83 = 8,108.10 : x
  2. Step 2: Convert to fraction form
    13,660.65/20,478.83 = 8,108.10/x
  3. Step 3: Cross multiply
    13,660.65x = 20,478.83 × 8,108.10
  4. Step 4: Simplify right side
    13,660.65x = 166,044,360.98
  5. Step 5: Solve for x
    x = 166,044,360.98/13,660.65
  6. Step 6: Final answer
    x = 12,154.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.