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Finding the Fourth Proportional to 18,369.50, 27,554.54 and 9,621.50

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Solution

The fourth proportional to 18,369.50, 27,554.54 and 9,621.50 is: 14,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.50 : 27,554.54 = 9,621.50 : x
  2. Step 2: Convert to fraction form
    18,369.50/27,554.54 = 9,621.50/x
  3. Step 3: Cross multiply
    18,369.50x = 27,554.54 × 9,621.50
  4. Step 4: Simplify right side
    18,369.50x = 265,115,820.73
  5. Step 5: Solve for x
    x = 265,115,820.73/18,369.50
  6. Step 6: Final answer
    x = 14,432.40

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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.