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Finding the Fourth Proportional to 19,705.56, 29,567.64 and 9,845.64

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Solution

The fourth proportional to 19,705.56, 29,567.64 and 9,845.64 is: 14,773.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,705.56 : 29,567.64 = 9,845.64 : x
  2. Step 2: Convert to fraction form
    19,705.56/29,567.64 = 9,845.64/x
  3. Step 3: Cross multiply
    19,705.56x = 29,567.64 × 9,845.64
  4. Step 4: Simplify right side
    19,705.56x = 291,112,339.09
  5. Step 5: Solve for x
    x = 291,112,339.09/19,705.56
  6. Step 6: Final answer
    x = 14,773.11

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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.