Home / 16,205.45-22,356.94-9,921.47

Finding the Fourth Proportional to 16,205.45, 22,356.94 and 9,921.47

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Solution

The fourth proportional to 16,205.45, 22,356.94 and 9,921.47 is: 13,687.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,205.45 : 22,356.94 = 9,921.47 : x
  2. Step 2: Convert to fraction form
    16,205.45/22,356.94 = 9,921.47/x
  3. Step 3: Cross multiply
    16,205.45x = 22,356.94 × 9,921.47
  4. Step 4: Simplify right side
    16,205.45x = 221,813,709.50
  5. Step 5: Solve for x
    x = 221,813,709.50/16,205.45
  6. Step 6: Final answer
    x = 13,687.60

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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.