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Finding the Fourth Proportional to 28,735.76, 43,106.64 and 7,959.26

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Solution

The fourth proportional to 28,735.76, 43,106.64 and 7,959.26 is: 11,939.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,735.76 : 43,106.64 = 7,959.26 : x
  2. Step 2: Convert to fraction form
    28,735.76/43,106.64 = 7,959.26/x
  3. Step 3: Cross multiply
    28,735.76x = 43,106.64 × 7,959.26
  4. Step 4: Simplify right side
    28,735.76x = 343,096,955.49
  5. Step 5: Solve for x
    x = 343,096,955.49/28,735.76
  6. Step 6: Final answer
    x = 11,939.72

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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.