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Finding the Fourth Proportional to 28,740.59, 43,110.90 and 7,964.09

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Solution

The fourth proportional to 28,740.59, 43,110.90 and 7,964.09 is: 11,946.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,740.59 : 43,110.90 = 7,964.09 : x
  2. Step 2: Convert to fraction form
    28,740.59/43,110.90 = 7,964.09/x
  3. Step 3: Cross multiply
    28,740.59x = 43,110.90 × 7,964.09
  4. Step 4: Simplify right side
    28,740.59x = 343,339,087.58
  5. Step 5: Solve for x
    x = 343,339,087.58/28,740.59
  6. Step 6: Final answer
    x = 11,946.14

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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.