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Finding the Fourth Proportional to 18,609.60, 25,681.23 and 10,651.80

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Solution

The fourth proportional to 18,609.60, 25,681.23 and 10,651.80 is: 14,699.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.60 : 25,681.23 = 10,651.80 : x
  2. Step 2: Convert to fraction form
    18,609.60/25,681.23 = 10,651.80/x
  3. Step 3: Cross multiply
    18,609.60x = 25,681.23 × 10,651.80
  4. Step 4: Simplify right side
    18,609.60x = 273,551,325.71
  5. Step 5: Solve for x
    x = 273,551,325.71/18,609.60
  6. Step 6: Final answer
    x = 14,699.47

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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.