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Finding the Fourth Proportional to 19,229.70, 28,844.55 and 18,136.20

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Solution

The fourth proportional to 19,229.70, 28,844.55 and 18,136.20 is: 27,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,229.70 : 28,844.55 = 18,136.20 : x
  2. Step 2: Convert to fraction form
    19,229.70/28,844.55 = 18,136.20/x
  3. Step 3: Cross multiply
    19,229.70x = 28,844.55 × 18,136.20
  4. Step 4: Simplify right side
    19,229.70x = 523,130,527.71
  5. Step 5: Solve for x
    x = 523,130,527.71/19,229.70
  6. Step 6: Final answer
    x = 27,204.30

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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.