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Finding the Fourth Proportional to 30,028.36, 45,041.82 and 7,841.92

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Solution

The fourth proportional to 30,028.36, 45,041.82 and 7,841.92 is: 11,762.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,028.36 : 45,041.82 = 7,841.92 : x
  2. Step 2: Convert to fraction form
    30,028.36/45,041.82 = 7,841.92/x
  3. Step 3: Cross multiply
    30,028.36x = 45,041.82 × 7,841.92
  4. Step 4: Simplify right side
    30,028.36x = 353,214,349.09
  5. Step 5: Solve for x
    x = 353,214,349.09/30,028.36
  6. Step 6: Final answer
    x = 11,762.69

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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.