Home / 12,440.32-18,660.40-3,206.40

Finding the Fourth Proportional to 12,440.32, 18,660.40 and 3,206.40

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Solution

The fourth proportional to 12,440.32, 18,660.40 and 3,206.40 is: 4,809.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.32 : 18,660.40 = 3,206.40 : x
  2. Step 2: Convert to fraction form
    12,440.32/18,660.40 = 3,206.40/x
  3. Step 3: Cross multiply
    12,440.32x = 18,660.40 × 3,206.40
  4. Step 4: Simplify right side
    12,440.32x = 59,832,706.56
  5. Step 5: Solve for x
    x = 59,832,706.56/12,440.32
  6. Step 6: Final answer
    x = 4,809.58

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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.