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Finding the Fourth Proportional to 13,553.96, 20,337.08 and 8,018.11

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Solution

The fourth proportional to 13,553.96, 20,337.08 and 8,018.11 is: 12,030.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.96 : 20,337.08 = 8,018.11 : x
  2. Step 2: Convert to fraction form
    13,553.96/20,337.08 = 8,018.11/x
  3. Step 3: Cross multiply
    13,553.96x = 20,337.08 × 8,018.11
  4. Step 4: Simplify right side
    13,553.96x = 163,064,929.85
  5. Step 5: Solve for x
    x = 163,064,929.85/13,553.96
  6. Step 6: Final answer
    x = 12,030.80

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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.