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Finding the Fourth Proportional to 28,706.68, 43,055.16 and 7,930.18

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Solution

The fourth proportional to 28,706.68, 43,055.16 and 7,930.18 is: 11,893.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,706.68 : 43,055.16 = 7,930.18 : x
  2. Step 2: Convert to fraction form
    28,706.68/43,055.16 = 7,930.18/x
  3. Step 3: Cross multiply
    28,706.68x = 43,055.16 × 7,930.18
  4. Step 4: Simplify right side
    28,706.68x = 341,435,168.73
  5. Step 5: Solve for x
    x = 341,435,168.73/28,706.68
  6. Step 6: Final answer
    x = 11,893.93

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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.