Home / 30,583.10-45,903.45-18,919.10

Finding the Fourth Proportional to 30,583.10, 45,903.45 and 18,919.10

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Solution

The fourth proportional to 30,583.10, 45,903.45 and 18,919.10 is: 28,396.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,583.10 : 45,903.45 = 18,919.10 : x
  2. Step 2: Convert to fraction form
    30,583.10/45,903.45 = 18,919.10/x
  3. Step 3: Cross multiply
    30,583.10x = 45,903.45 × 18,919.10
  4. Step 4: Simplify right side
    30,583.10x = 868,451,960.90
  5. Step 5: Solve for x
    x = 868,451,960.90/30,583.10
  6. Step 6: Final answer
    x = 28,396.47

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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.