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Finding the Fourth Proportional to 15,616, 21,544.04 and 9,949.74

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Solution

The fourth proportional to 15,616, 21,544.04 and 9,949.74 is: 13,726.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,616 : 21,544.04 = 9,949.74 : x
  2. Step 2: Convert to fraction form
    15,616/21,544.04 = 9,949.74/x
  3. Step 3: Cross multiply
    15,616x = 21,544.04 × 9,949.74
  4. Step 4: Simplify right side
    15,616x = 214,357,596.55
  5. Step 5: Solve for x
    x = 214,357,596.55/15,616
  6. Step 6: Final answer
    x = 13,726.79

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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.