Home / 19,455.90-29,179.23-8,919.36

Finding the Fourth Proportional to 19,455.90, 29,179.23 and 8,919.36

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Solution

The fourth proportional to 19,455.90, 29,179.23 and 8,919.36 is: 13,376.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,455.90 : 29,179.23 = 8,919.36 : x
  2. Step 2: Convert to fraction form
    19,455.90/29,179.23 = 8,919.36/x
  3. Step 3: Cross multiply
    19,455.90x = 29,179.23 × 8,919.36
  4. Step 4: Simplify right side
    19,455.90x = 260,260,056.89
  5. Step 5: Solve for x
    x = 260,260,056.89/19,455.90
  6. Step 6: Final answer
    x = 13,376.92

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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.