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Finding the Fourth Proportional to 19,883.66, 29,820.87 and 8,784.29

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Solution

The fourth proportional to 19,883.66, 29,820.87 and 8,784.29 is: 13,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,883.66 : 29,820.87 = 8,784.29 : x
  2. Step 2: Convert to fraction form
    19,883.66/29,820.87 = 8,784.29/x
  3. Step 3: Cross multiply
    19,883.66x = 29,820.87 × 8,784.29
  4. Step 4: Simplify right side
    19,883.66x = 261,955,244.68
  5. Step 5: Solve for x
    x = 261,955,244.68/19,883.66
  6. Step 6: Final answer
    x = 13,174.40

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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.