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Finding the Fourth Proportional to 20,175.99, 30,175.47 and 17,970.36

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Solution

The fourth proportional to 20,175.99, 30,175.47 and 17,970.36 is: 26,876.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.99 : 30,175.47 = 17,970.36 : x
  2. Step 2: Convert to fraction form
    20,175.99/30,175.47 = 17,970.36/x
  3. Step 3: Cross multiply
    20,175.99x = 30,175.47 × 17,970.36
  4. Step 4: Simplify right side
    20,175.99x = 542,264,059.07
  5. Step 5: Solve for x
    x = 542,264,059.07/20,175.99
  6. Step 6: Final answer
    x = 26,876.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.