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Finding the Fourth Proportional to 26,079.90, 35,990.28 and 14,143.20

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Solution

The fourth proportional to 26,079.90, 35,990.28 and 14,143.20 is: 19,517.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,079.90 : 35,990.28 = 14,143.20 : x
  2. Step 2: Convert to fraction form
    26,079.90/35,990.28 = 14,143.20/x
  3. Step 3: Cross multiply
    26,079.90x = 35,990.28 × 14,143.20
  4. Step 4: Simplify right side
    26,079.90x = 509,017,728.10
  5. Step 5: Solve for x
    x = 509,017,728.10/26,079.90
  6. Step 6: Final answer
    x = 19,517.63

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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.