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Finding the Fourth Proportional to 18,347.93, 25,321.70 and 10,391.57

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Solution

The fourth proportional to 18,347.93, 25,321.70 and 10,391.57 is: 14,341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,347.93 : 25,321.70 = 10,391.57 : x
  2. Step 2: Convert to fraction form
    18,347.93/25,321.70 = 10,391.57/x
  3. Step 3: Cross multiply
    18,347.93x = 25,321.70 × 10,391.57
  4. Step 4: Simplify right side
    18,347.93x = 263,132,117.44
  5. Step 5: Solve for x
    x = 263,132,117.44/18,347.93
  6. Step 6: Final answer
    x = 14,341.25

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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.