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Finding the Fourth Proportional to 11,521.02, 15,899.52 and 6,805.32

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Solution

The fourth proportional to 11,521.02, 15,899.52 and 6,805.32 is: 9,391.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,521.02 : 15,899.52 = 6,805.32 : x
  2. Step 2: Convert to fraction form
    11,521.02/15,899.52 = 6,805.32/x
  3. Step 3: Cross multiply
    11,521.02x = 15,899.52 × 6,805.32
  4. Step 4: Simplify right side
    11,521.02x = 108,201,321.45
  5. Step 5: Solve for x
    x = 108,201,321.45/11,521.02
  6. Step 6: Final answer
    x = 9,391.64

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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.