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Finding the Fourth Proportional to 15,554, 21,464.57 and 8,480.27

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Solution

The fourth proportional to 15,554, 21,464.57 and 8,480.27 is: 11,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554 : 21,464.57 = 8,480.27 : x
  2. Step 2: Convert to fraction form
    15,554/21,464.57 = 8,480.27/x
  3. Step 3: Cross multiply
    15,554x = 21,464.57 × 8,480.27
  4. Step 4: Simplify right side
    15,554x = 182,025,349.03
  5. Step 5: Solve for x
    x = 182,025,349.03/15,554
  6. Step 6: Final answer
    x = 11,702.80

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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.