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Finding the Fourth Proportional to 15,553, 21,463.19 and 8,479.27

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Solution

The fourth proportional to 15,553, 21,463.19 and 8,479.27 is: 11,701.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553 : 21,463.19 = 8,479.27 : x
  2. Step 2: Convert to fraction form
    15,553/21,463.19 = 8,479.27/x
  3. Step 3: Cross multiply
    15,553x = 21,463.19 × 8,479.27
  4. Step 4: Simplify right side
    15,553x = 181,992,183.07
  5. Step 5: Solve for x
    x = 181,992,183.07/15,553
  6. Step 6: Final answer
    x = 11,701.42

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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.