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Finding the Fourth Proportional to 19,877.84, 29,810.20 and 8,784.08

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Solution

The fourth proportional to 19,877.84, 29,810.20 and 8,784.08 is: 13,173.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,877.84 : 29,810.20 = 8,784.08 : x
  2. Step 2: Convert to fraction form
    19,877.84/29,810.20 = 8,784.08/x
  3. Step 3: Cross multiply
    19,877.84x = 29,810.20 × 8,784.08
  4. Step 4: Simplify right side
    19,877.84x = 261,855,181.62
  5. Step 5: Solve for x
    x = 261,855,181.62/19,877.84
  6. Step 6: Final answer
    x = 13,173.22

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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.