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Finding the Fourth Proportional to 18,651.04, 25,740 and 10,269.12

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Solution

The fourth proportional to 18,651.04, 25,740 and 10,269.12 is: 14,172.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.04 : 25,740 = 10,269.12 : x
  2. Step 2: Convert to fraction form
    18,651.04/25,740 = 10,269.12/x
  3. Step 3: Cross multiply
    18,651.04x = 25,740 × 10,269.12
  4. Step 4: Simplify right side
    18,651.04x = 264,327,148.80
  5. Step 5: Solve for x
    x = 264,327,148.80/18,651.04
  6. Step 6: Final answer
    x = 14,172.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.