Home / 30,211.40-45,317.10-8,028.20

Finding the Fourth Proportional to 30,211.40, 45,317.10 and 8,028.20

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Solution

The fourth proportional to 30,211.40, 45,317.10 and 8,028.20 is: 12,042.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,211.40 : 45,317.10 = 8,028.20 : x
  2. Step 2: Convert to fraction form
    30,211.40/45,317.10 = 8,028.20/x
  3. Step 3: Cross multiply
    30,211.40x = 45,317.10 × 8,028.20
  4. Step 4: Simplify right side
    30,211.40x = 363,814,742.22
  5. Step 5: Solve for x
    x = 363,814,742.22/30,211.40
  6. Step 6: Final answer
    x = 12,042.30

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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.