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Finding the Fourth Proportional to 18,143, 27,211.34 and 4,816.08

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Solution

The fourth proportional to 18,143, 27,211.34 and 4,816.08 is: 7,223.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143 : 27,211.34 = 4,816.08 : x
  2. Step 2: Convert to fraction form
    18,143/27,211.34 = 4,816.08/x
  3. Step 3: Cross multiply
    18,143x = 27,211.34 × 4,816.08
  4. Step 4: Simplify right side
    18,143x = 131,051,990.35
  5. Step 5: Solve for x
    x = 131,051,990.35/18,143
  6. Step 6: Final answer
    x = 7,223.28

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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.