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Finding the Fourth Proportional to 18,611.94, 27,888.75 and 15,827.16

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Solution

The fourth proportional to 18,611.94, 27,888.75 and 15,827.16 is: 23,715.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.94 : 27,888.75 = 15,827.16 : x
  2. Step 2: Convert to fraction form
    18,611.94/27,888.75 = 15,827.16/x
  3. Step 3: Cross multiply
    18,611.94x = 27,888.75 × 15,827.16
  4. Step 4: Simplify right side
    18,611.94x = 441,399,708.45
  5. Step 5: Solve for x
    x = 441,399,708.45/18,611.94
  6. Step 6: Final answer
    x = 23,715.94

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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.