Home / 13,665.36-20,472.12-8,106.96

Finding the Fourth Proportional to 13,665.36, 20,472.12 and 8,106.96

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Solution

The fourth proportional to 13,665.36, 20,472.12 and 8,106.96 is: 12,145.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.36 : 20,472.12 = 8,106.96 : x
  2. Step 2: Convert to fraction form
    13,665.36/20,472.12 = 8,106.96/x
  3. Step 3: Cross multiply
    13,665.36x = 20,472.12 × 8,106.96
  4. Step 4: Simplify right side
    13,665.36x = 165,966,657.96
  5. Step 5: Solve for x
    x = 165,966,657.96/13,665.36
  6. Step 6: Final answer
    x = 12,145.06

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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.