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Finding the Fourth Proportional to 12,598.40, 17,386.50 and 7,221.73

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Solution

The fourth proportional to 12,598.40, 17,386.50 and 7,221.73 is: 9,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,598.40 : 17,386.50 = 7,221.73 : x
  2. Step 2: Convert to fraction form
    12,598.40/17,386.50 = 7,221.73/x
  3. Step 3: Cross multiply
    12,598.40x = 17,386.50 × 7,221.73
  4. Step 4: Simplify right side
    12,598.40x = 125,560,592.26
  5. Step 5: Solve for x
    x = 125,560,592.26/12,598.40
  6. Step 6: Final answer
    x = 9,966.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.