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Finding the Fourth Proportional to 16,393.17, 22,621.41 and 9,678.45

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Solution

The fourth proportional to 16,393.17, 22,621.41 and 9,678.45 is: 13,355.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,393.17 : 22,621.41 = 9,678.45 : x
  2. Step 2: Convert to fraction form
    16,393.17/22,621.41 = 9,678.45/x
  3. Step 3: Cross multiply
    16,393.17x = 22,621.41 × 9,678.45
  4. Step 4: Simplify right side
    16,393.17x = 218,940,185.61
  5. Step 5: Solve for x
    x = 218,940,185.61/16,393.17
  6. Step 6: Final answer
    x = 13,355.57

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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.