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Finding the Fourth Proportional to 19,499.20, 29,200.20 and 18,624.40

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Solution

The fourth proportional to 19,499.20, 29,200.20 and 18,624.40 is: 27,890.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,499.20 : 29,200.20 = 18,624.40 : x
  2. Step 2: Convert to fraction form
    19,499.20/29,200.20 = 18,624.40/x
  3. Step 3: Cross multiply
    19,499.20x = 29,200.20 × 18,624.40
  4. Step 4: Simplify right side
    19,499.20x = 543,836,204.88
  5. Step 5: Solve for x
    x = 543,836,204.88/19,499.20
  6. Step 6: Final answer
    x = 27,890.18

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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.