Home / 12,210.42-16,847.55-8,436.90

Finding the Fourth Proportional to 12,210.42, 16,847.55 and 8,436.90

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Solution

The fourth proportional to 12,210.42, 16,847.55 and 8,436.90 is: 11,640.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.42 : 16,847.55 = 8,436.90 : x
  2. Step 2: Convert to fraction form
    12,210.42/16,847.55 = 8,436.90/x
  3. Step 3: Cross multiply
    12,210.42x = 16,847.55 × 8,436.90
  4. Step 4: Simplify right side
    12,210.42x = 142,141,094.60
  5. Step 5: Solve for x
    x = 142,141,094.60/12,210.42
  6. Step 6: Final answer
    x = 11,640.97

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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.