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Finding the Fourth Proportional to 18,705.44, 28,050.84 and 7,012.28

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Solution

The fourth proportional to 18,705.44, 28,050.84 and 7,012.28 is: 10,515.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.44 : 28,050.84 = 7,012.28 : x
  2. Step 2: Convert to fraction form
    18,705.44/28,050.84 = 7,012.28/x
  3. Step 3: Cross multiply
    18,705.44x = 28,050.84 × 7,012.28
  4. Step 4: Simplify right side
    18,705.44x = 196,700,344.32
  5. Step 5: Solve for x
    x = 196,700,344.32/18,705.44
  6. Step 6: Final answer
    x = 10,515.68

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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.