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Finding the Fourth Proportional to 19,907.10, 29,850.57 and 8,817.19

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Solution

The fourth proportional to 19,907.10, 29,850.57 and 8,817.19 is: 13,221.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,907.10 : 29,850.57 = 8,817.19 : x
  2. Step 2: Convert to fraction form
    19,907.10/29,850.57 = 8,817.19/x
  3. Step 3: Cross multiply
    19,907.10x = 29,850.57 × 8,817.19
  4. Step 4: Simplify right side
    19,907.10x = 263,198,094.71
  5. Step 5: Solve for x
    x = 263,198,094.71/19,907.10
  6. Step 6: Final answer
    x = 13,221.32

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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.