Home / 11,157.30-15,396.53-6,443.10

Finding the Fourth Proportional to 11,157.30, 15,396.53 and 6,443.10

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Solution

The fourth proportional to 11,157.30, 15,396.53 and 6,443.10 is: 8,891.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.30 : 15,396.53 = 6,443.10 : x
  2. Step 2: Convert to fraction form
    11,157.30/15,396.53 = 6,443.10/x
  3. Step 3: Cross multiply
    11,157.30x = 15,396.53 × 6,443.10
  4. Step 4: Simplify right side
    11,157.30x = 99,201,382.44
  5. Step 5: Solve for x
    x = 99,201,382.44/11,157.30
  6. Step 6: Final answer
    x = 8,891.16

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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.