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Finding the Fourth Proportional to 13,207, 19,809.96 and 7,656.36

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Solution

The fourth proportional to 13,207, 19,809.96 and 7,656.36 is: 11,484.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207 : 19,809.96 = 7,656.36 : x
  2. Step 2: Convert to fraction form
    13,207/19,809.96 = 7,656.36/x
  3. Step 3: Cross multiply
    13,207x = 19,809.96 × 7,656.36
  4. Step 4: Simplify right side
    13,207x = 151,672,185.35
  5. Step 5: Solve for x
    x = 151,672,185.35/13,207
  6. Step 6: Final answer
    x = 11,484.23

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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.