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Finding the Fourth Proportional to 18,683.90, 25,772.54 and 14,698.70

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Solution

The fourth proportional to 18,683.90, 25,772.54 and 14,698.70 is: 20,275.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.90 : 25,772.54 = 14,698.70 : x
  2. Step 2: Convert to fraction form
    18,683.90/25,772.54 = 14,698.70/x
  3. Step 3: Cross multiply
    18,683.90x = 25,772.54 × 14,698.70
  4. Step 4: Simplify right side
    18,683.90x = 378,822,833.70
  5. Step 5: Solve for x
    x = 378,822,833.70/18,683.90
  6. Step 6: Final answer
    x = 20,275.36

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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.