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Finding the Fourth Proportional to 30,014.70, 45,020.85 and 7,525.32

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Solution

The fourth proportional to 30,014.70, 45,020.85 and 7,525.32 is: 11,287.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,014.70 : 45,020.85 = 7,525.32 : x
  2. Step 2: Convert to fraction form
    30,014.70/45,020.85 = 7,525.32/x
  3. Step 3: Cross multiply
    30,014.70x = 45,020.85 × 7,525.32
  4. Step 4: Simplify right side
    30,014.70x = 338,796,302.92
  5. Step 5: Solve for x
    x = 338,796,302.92/30,014.70
  6. Step 6: Final answer
    x = 11,287.68

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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.