Home / 12,121.32-16,735.68-8,935.02

Finding the Fourth Proportional to 12,121.32, 16,735.68 and 8,935.02

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Solution

The fourth proportional to 12,121.32, 16,735.68 and 8,935.02 is: 12,336.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.32 : 16,735.68 = 8,935.02 : x
  2. Step 2: Convert to fraction form
    12,121.32/16,735.68 = 8,935.02/x
  3. Step 3: Cross multiply
    12,121.32x = 16,735.68 × 8,935.02
  4. Step 4: Simplify right side
    12,121.32x = 149,533,635.51
  5. Step 5: Solve for x
    x = 149,533,635.51/12,121.32
  6. Step 6: Final answer
    x = 12,336.42

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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.