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Finding the Fourth Proportional to 18,394.83, 25,384.12 and 10,436.90

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Solution

The fourth proportional to 18,394.83, 25,384.12 and 10,436.90 is: 14,402.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,394.83 : 25,384.12 = 10,436.90 : x
  2. Step 2: Convert to fraction form
    18,394.83/25,384.12 = 10,436.90/x
  3. Step 3: Cross multiply
    18,394.83x = 25,384.12 × 10,436.90
  4. Step 4: Simplify right side
    18,394.83x = 264,931,369.02
  5. Step 5: Solve for x
    x = 264,931,369.02/18,394.83
  6. Step 6: Final answer
    x = 14,402.49

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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.