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Finding the Fourth Proportional to 18,461.52, 25,477.42 and 10,078.56

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Solution

The fourth proportional to 18,461.52, 25,477.42 and 10,078.56 is: 13,908.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.52 : 25,477.42 = 10,078.56 : x
  2. Step 2: Convert to fraction form
    18,461.52/25,477.42 = 10,078.56/x
  3. Step 3: Cross multiply
    18,461.52x = 25,477.42 × 10,078.56
  4. Step 4: Simplify right side
    18,461.52x = 256,775,706.12
  5. Step 5: Solve for x
    x = 256,775,706.12/18,461.52
  6. Step 6: Final answer
    x = 13,908.70

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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.