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Finding the Fourth Proportional to 18,102.72, 24,981.81 and 10,144.89

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Solution

The fourth proportional to 18,102.72, 24,981.81 and 10,144.89 is: 13,999.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,102.72 : 24,981.81 = 10,144.89 : x
  2. Step 2: Convert to fraction form
    18,102.72/24,981.81 = 10,144.89/x
  3. Step 3: Cross multiply
    18,102.72x = 24,981.81 × 10,144.89
  4. Step 4: Simplify right side
    18,102.72x = 253,437,714.45
  5. Step 5: Solve for x
    x = 253,437,714.45/18,102.72
  6. Step 6: Final answer
    x = 13,999.98

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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.