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Finding the Fourth Proportional to 18,431.16, 25,435.01 and 10,473.40

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Solution

The fourth proportional to 18,431.16, 25,435.01 and 10,473.40 is: 14,453.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.16 : 25,435.01 = 10,473.40 : x
  2. Step 2: Convert to fraction form
    18,431.16/25,435.01 = 10,473.40/x
  3. Step 3: Cross multiply
    18,431.16x = 25,435.01 × 10,473.40
  4. Step 4: Simplify right side
    18,431.16x = 266,391,033.73
  5. Step 5: Solve for x
    x = 266,391,033.73/18,431.16
  6. Step 6: Final answer
    x = 14,453.30

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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.