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Finding the Fourth Proportional to 18,512.08, 25,521.06 and 12,534.28

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Solution

The fourth proportional to 18,512.08, 25,521.06 and 12,534.28 is: 17,279.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.08 : 25,521.06 = 12,534.28 : x
  2. Step 2: Convert to fraction form
    18,512.08/25,521.06 = 12,534.28/x
  3. Step 3: Cross multiply
    18,512.08x = 25,521.06 × 12,534.28
  4. Step 4: Simplify right side
    18,512.08x = 319,888,111.94
  5. Step 5: Solve for x
    x = 319,888,111.94/18,512.08
  6. Step 6: Final answer
    x = 17,279.97

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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.