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Finding the Fourth Proportional to 19,847.70, 29,772.39 and 8,751.84

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Solution

The fourth proportional to 19,847.70, 29,772.39 and 8,751.84 is: 13,128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,847.70 : 29,772.39 = 8,751.84 : x
  2. Step 2: Convert to fraction form
    19,847.70/29,772.39 = 8,751.84/x
  3. Step 3: Cross multiply
    19,847.70x = 29,772.39 × 8,751.84
  4. Step 4: Simplify right side
    19,847.70x = 260,563,193.70
  5. Step 5: Solve for x
    x = 260,563,193.70/19,847.70
  6. Step 6: Final answer
    x = 13,128.13

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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.