Home / 19,886.43-29,817.68-8,787.45

Finding the Fourth Proportional to 19,886.43, 29,817.68 and 8,787.45

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Solution

The fourth proportional to 19,886.43, 29,817.68 and 8,787.45 is: 13,175.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,886.43 : 29,817.68 = 8,787.45 : x
  2. Step 2: Convert to fraction form
    19,886.43/29,817.68 = 8,787.45/x
  3. Step 3: Cross multiply
    19,886.43x = 29,817.68 × 8,787.45
  4. Step 4: Simplify right side
    19,886.43x = 262,021,328.18
  5. Step 5: Solve for x
    x = 262,021,328.18/19,886.43
  6. Step 6: Final answer
    x = 13,175.89

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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.