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Finding the Fourth Proportional to 19,656.90, 29,497.50 and 7,970.22

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Solution

The fourth proportional to 19,656.90, 29,497.50 and 7,970.22 is: 11,960.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,656.90 : 29,497.50 = 7,970.22 : x
  2. Step 2: Convert to fraction form
    19,656.90/29,497.50 = 7,970.22/x
  3. Step 3: Cross multiply
    19,656.90x = 29,497.50 × 7,970.22
  4. Step 4: Simplify right side
    19,656.90x = 235,101,564.45
  5. Step 5: Solve for x
    x = 235,101,564.45/19,656.90
  6. Step 6: Final answer
    x = 11,960.26

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.