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Finding the Fourth Proportional to 28,741.70, 43,112.47 and 9,020.34

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Solution

The fourth proportional to 28,741.70, 43,112.47 and 9,020.34 is: 13,530.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,741.70 : 43,112.47 = 9,020.34 : x
  2. Step 2: Convert to fraction form
    28,741.70/43,112.47 = 9,020.34/x
  3. Step 3: Cross multiply
    28,741.70x = 43,112.47 × 9,020.34
  4. Step 4: Simplify right side
    28,741.70x = 388,889,137.64
  5. Step 5: Solve for x
    x = 388,889,137.64/28,741.70
  6. Step 6: Final answer
    x = 13,530.48

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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.