Home / 13,553.18-20,330.30-4,192.36

Finding the Fourth Proportional to 13,553.18, 20,330.30 and 4,192.36

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Solution

The fourth proportional to 13,553.18, 20,330.30 and 4,192.36 is: 6,288.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.18 : 20,330.30 = 4,192.36 : x
  2. Step 2: Convert to fraction form
    13,553.18/20,330.30 = 4,192.36/x
  3. Step 3: Cross multiply
    13,553.18x = 20,330.30 × 4,192.36
  4. Step 4: Simplify right side
    13,553.18x = 85,231,864.72
  5. Step 5: Solve for x
    x = 85,231,864.72/13,553.18
  6. Step 6: Final answer
    x = 6,288.70

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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.