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Finding the Fourth Proportional to 30,357.99, 45,552.48 and 20,476.55

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Solution

The fourth proportional to 30,357.99, 45,552.48 and 20,476.55 is: 30,725.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,357.99 : 45,552.48 = 20,476.55 : x
  2. Step 2: Convert to fraction form
    30,357.99/45,552.48 = 20,476.55/x
  3. Step 3: Cross multiply
    30,357.99x = 45,552.48 × 20,476.55
  4. Step 4: Simplify right side
    30,357.99x = 932,757,415.21
  5. Step 5: Solve for x
    x = 932,757,415.21/30,357.99
  6. Step 6: Final answer
    x = 30,725.27

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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.