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Finding the Fourth Proportional to 18,152.39, 27,223.58 and 12,871.80

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Solution

The fourth proportional to 18,152.39, 27,223.58 and 12,871.80 is: 19,304.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,152.39 : 27,223.58 = 12,871.80 : x
  2. Step 2: Convert to fraction form
    18,152.39/27,223.58 = 12,871.80/x
  3. Step 3: Cross multiply
    18,152.39x = 27,223.58 × 12,871.80
  4. Step 4: Simplify right side
    18,152.39x = 350,416,509.22
  5. Step 5: Solve for x
    x = 350,416,509.22/18,152.39
  6. Step 6: Final answer
    x = 19,304.15

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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.