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Finding the Fourth Proportional to 18,342.70, 25,313.16 and 10,384.76

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Solution

The fourth proportional to 18,342.70, 25,313.16 and 10,384.76 is: 14,331.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.70 : 25,313.16 = 10,384.76 : x
  2. Step 2: Convert to fraction form
    18,342.70/25,313.16 = 10,384.76/x
  3. Step 3: Cross multiply
    18,342.70x = 25,313.16 × 10,384.76
  4. Step 4: Simplify right side
    18,342.70x = 262,870,992.87
  5. Step 5: Solve for x
    x = 262,870,992.87/18,342.70
  6. Step 6: Final answer
    x = 14,331.09

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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.