Home / 11,946.15-16,485.84-6,640.98

Finding the Fourth Proportional to 11,946.15, 16,485.84 and 6,640.98

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Solution

The fourth proportional to 11,946.15, 16,485.84 and 6,640.98 is: 9,164.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,946.15 : 16,485.84 = 6,640.98 : x
  2. Step 2: Convert to fraction form
    11,946.15/16,485.84 = 6,640.98/x
  3. Step 3: Cross multiply
    11,946.15x = 16,485.84 × 6,640.98
  4. Step 4: Simplify right side
    11,946.15x = 109,482,133.72
  5. Step 5: Solve for x
    x = 109,482,133.72/11,946.15
  6. Step 6: Final answer
    x = 9,164.64

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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.