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Finding the Fourth Proportional to 28,639.99, 42,991.41 and 22,754.70

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Solution

The fourth proportional to 28,639.99, 42,991.41 and 22,754.70 is: 34,157.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.99 : 42,991.41 = 22,754.70 : x
  2. Step 2: Convert to fraction form
    28,639.99/42,991.41 = 22,754.70/x
  3. Step 3: Cross multiply
    28,639.99x = 42,991.41 × 22,754.70
  4. Step 4: Simplify right side
    28,639.99x = 978,256,630.83
  5. Step 5: Solve for x
    x = 978,256,630.83/28,639.99
  6. Step 6: Final answer
    x = 34,157.02

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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.