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Finding the Fourth Proportional to 28,361.40, 42,566.69 and 28,295.79

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Solution

The fourth proportional to 28,361.40, 42,566.69 and 28,295.79 is: 42,468.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,361.40 : 42,566.69 = 28,295.79 : x
  2. Step 2: Convert to fraction form
    28,361.40/42,566.69 = 28,295.79/x
  3. Step 3: Cross multiply
    28,361.40x = 42,566.69 × 28,295.79
  4. Step 4: Simplify right side
    28,361.40x = 1,204,458,121.24
  5. Step 5: Solve for x
    x = 1,204,458,121.24/28,361.40
  6. Step 6: Final answer
    x = 42,468.22

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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.