Home / 12,140.64-18,210.90-6,942.84

Finding the Fourth Proportional to 12,140.64, 18,210.90 and 6,942.84

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Solution

The fourth proportional to 12,140.64, 18,210.90 and 6,942.84 is: 10,414.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.64 : 18,210.90 = 6,942.84 : x
  2. Step 2: Convert to fraction form
    12,140.64/18,210.90 = 6,942.84/x
  3. Step 3: Cross multiply
    12,140.64x = 18,210.90 × 6,942.84
  4. Step 4: Simplify right side
    12,140.64x = 126,435,364.96
  5. Step 5: Solve for x
    x = 126,435,364.96/12,140.64
  6. Step 6: Final answer
    x = 10,414.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.