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Finding the Fourth Proportional to 38,678.46, 58,018.50 and 12,383.13

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Solution

The fourth proportional to 38,678.46, 58,018.50 and 12,383.13 is: 18,574.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,678.46 : 58,018.50 = 12,383.13 : x
  2. Step 2: Convert to fraction form
    38,678.46/58,018.50 = 12,383.13/x
  3. Step 3: Cross multiply
    38,678.46x = 58,018.50 × 12,383.13
  4. Step 4: Simplify right side
    38,678.46x = 718,450,410.34
  5. Step 5: Solve for x
    x = 718,450,410.34/38,678.46
  6. Step 6: Final answer
    x = 18,574.95

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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.