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Finding the Fourth Proportional to 21,027.84, 31,541.08 and 8,544.16

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Solution

The fourth proportional to 21,027.84, 31,541.08 and 8,544.16 is: 12,815.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.84 : 31,541.08 = 8,544.16 : x
  2. Step 2: Convert to fraction form
    21,027.84/31,541.08 = 8,544.16/x
  3. Step 3: Cross multiply
    21,027.84x = 31,541.08 × 8,544.16
  4. Step 4: Simplify right side
    21,027.84x = 269,492,034.09
  5. Step 5: Solve for x
    x = 269,492,034.09/21,027.84
  6. Step 6: Final answer
    x = 12,815.96

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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.