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Finding the Fourth Proportional to 19,295.66, 28,921.15 and 8,885.54

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Solution

The fourth proportional to 19,295.66, 28,921.15 and 8,885.54 is: 13,318.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,295.66 : 28,921.15 = 8,885.54 : x
  2. Step 2: Convert to fraction form
    19,295.66/28,921.15 = 8,885.54/x
  3. Step 3: Cross multiply
    19,295.66x = 28,921.15 × 8,885.54
  4. Step 4: Simplify right side
    19,295.66x = 256,980,035.17
  5. Step 5: Solve for x
    x = 256,980,035.17/19,295.66
  6. Step 6: Final answer
    x = 13,318.02

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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.