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Finding the Fourth Proportional to 30,391.35, 45,573.35 and 12,852.15

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Solution

The fourth proportional to 30,391.35, 45,573.35 and 12,852.15 is: 19,272.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,391.35 : 45,573.35 = 12,852.15 : x
  2. Step 2: Convert to fraction form
    30,391.35/45,573.35 = 12,852.15/x
  3. Step 3: Cross multiply
    30,391.35x = 45,573.35 × 12,852.15
  4. Step 4: Simplify right side
    30,391.35x = 585,715,465.94
  5. Step 5: Solve for x
    x = 585,715,465.94/30,391.35
  6. Step 6: Final answer
    x = 19,272.44

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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.