Home / 12,740.30-17,583.23-7,704.55

Finding the Fourth Proportional to 12,740.30, 17,583.23 and 7,704.55

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Solution

The fourth proportional to 12,740.30, 17,583.23 and 7,704.55 is: 10,633.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.30 : 17,583.23 = 7,704.55 : x
  2. Step 2: Convert to fraction form
    12,740.30/17,583.23 = 7,704.55/x
  3. Step 3: Cross multiply
    12,740.30x = 17,583.23 × 7,704.55
  4. Step 4: Simplify right side
    12,740.30x = 135,470,915.94
  5. Step 5: Solve for x
    x = 135,470,915.94/12,740.30
  6. Step 6: Final answer
    x = 10,633.26

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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.