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Finding the Fourth Proportional to 18,430.18, 25,433.62 and 10,472.40

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Solution

The fourth proportional to 18,430.18, 25,433.62 and 10,472.40 is: 14,451.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.18 : 25,433.62 = 10,472.40 : x
  2. Step 2: Convert to fraction form
    18,430.18/25,433.62 = 10,472.40/x
  3. Step 3: Cross multiply
    18,430.18x = 25,433.62 × 10,472.40
  4. Step 4: Simplify right side
    18,430.18x = 266,351,015.91
  5. Step 5: Solve for x
    x = 266,351,015.91/18,430.18
  6. Step 6: Final answer
    x = 14,451.90

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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.