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Finding the Fourth Proportional to 18,113.36, 25,008.57 and 11,317.68

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Solution

The fourth proportional to 18,113.36, 25,008.57 and 11,317.68 is: 15,625.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.36 : 25,008.57 = 11,317.68 : x
  2. Step 2: Convert to fraction form
    18,113.36/25,008.57 = 11,317.68/x
  3. Step 3: Cross multiply
    18,113.36x = 25,008.57 × 11,317.68
  4. Step 4: Simplify right side
    18,113.36x = 283,038,992.52
  5. Step 5: Solve for x
    x = 283,038,992.52/18,113.36
  6. Step 6: Final answer
    x = 15,625.98

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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.