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Finding the Fourth Proportional to 18,309.16, 25,266.63 and 9,925.66

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Solution

The fourth proportional to 18,309.16, 25,266.63 and 9,925.66 is: 13,697.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.16 : 25,266.63 = 9,925.66 : x
  2. Step 2: Convert to fraction form
    18,309.16/25,266.63 = 9,925.66/x
  3. Step 3: Cross multiply
    18,309.16x = 25,266.63 × 9,925.66
  4. Step 4: Simplify right side
    18,309.16x = 250,787,978.73
  5. Step 5: Solve for x
    x = 250,787,978.73/18,309.16
  6. Step 6: Final answer
    x = 13,697.40

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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.