Home / 12,450.46-18,661.56-7,772.55

Finding the Fourth Proportional to 12,450.46, 18,661.56 and 7,772.55

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Solution

The fourth proportional to 12,450.46, 18,661.56 and 7,772.55 is: 11,650.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,450.46 : 18,661.56 = 7,772.55 : x
  2. Step 2: Convert to fraction form
    12,450.46/18,661.56 = 7,772.55/x
  3. Step 3: Cross multiply
    12,450.46x = 18,661.56 × 7,772.55
  4. Step 4: Simplify right side
    12,450.46x = 145,047,908.18
  5. Step 5: Solve for x
    x = 145,047,908.18/12,450.46
  6. Step 6: Final answer
    x = 11,650.00

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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.