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Finding the Fourth Proportional to 18,702.36, 25,824.42 and 17,856.72

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Solution

The fourth proportional to 18,702.36, 25,824.42 and 17,856.72 is: 24,656.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.36 : 25,824.42 = 17,856.72 : x
  2. Step 2: Convert to fraction form
    18,702.36/25,824.42 = 17,856.72/x
  3. Step 3: Cross multiply
    18,702.36x = 25,824.42 × 17,856.72
  4. Step 4: Simplify right side
    18,702.36x = 461,139,437.10
  5. Step 5: Solve for x
    x = 461,139,437.10/18,702.36
  6. Step 6: Final answer
    x = 24,656.75

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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.