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Finding the Fourth Proportional to 18,440.88, 25,444.60 and 10,782.68

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Solution

The fourth proportional to 18,440.88, 25,444.60 and 10,782.68 is: 14,877.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,440.88 : 25,444.60 = 10,782.68 : x
  2. Step 2: Convert to fraction form
    18,440.88/25,444.60 = 10,782.68/x
  3. Step 3: Cross multiply
    18,440.88x = 25,444.60 × 10,782.68
  4. Step 4: Simplify right side
    18,440.88x = 274,360,979.53
  5. Step 5: Solve for x
    x = 274,360,979.53/18,440.88
  6. Step 6: Final answer
    x = 14,877.87

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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.