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Finding the Fourth Proportional to 18,548.80, 27,823.20 and 10,772.80

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Solution

The fourth proportional to 18,548.80, 27,823.20 and 10,772.80 is: 16,159.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,548.80 : 27,823.20 = 10,772.80 : x
  2. Step 2: Convert to fraction form
    18,548.80/27,823.20 = 10,772.80/x
  3. Step 3: Cross multiply
    18,548.80x = 27,823.20 × 10,772.80
  4. Step 4: Simplify right side
    18,548.80x = 299,733,768.96
  5. Step 5: Solve for x
    x = 299,733,768.96/18,548.80
  6. Step 6: Final answer
    x = 16,159.20

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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.