Home / 15,504.62-21,396.60-8,431.16

Finding the Fourth Proportional to 15,504.62, 21,396.60 and 8,431.16

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Solution

The fourth proportional to 15,504.62, 21,396.60 and 8,431.16 is: 11,635.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,504.62 : 21,396.60 = 8,431.16 : x
  2. Step 2: Convert to fraction form
    15,504.62/21,396.60 = 8,431.16/x
  3. Step 3: Cross multiply
    15,504.62x = 21,396.60 × 8,431.16
  4. Step 4: Simplify right side
    15,504.62x = 180,398,158.06
  5. Step 5: Solve for x
    x = 180,398,158.06/15,504.62
  6. Step 6: Final answer
    x = 11,635.12

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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.