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Finding the Fourth Proportional to 30,393.72, 45,562.74 and 10,661.52

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Solution

The fourth proportional to 30,393.72, 45,562.74 and 10,661.52 is: 15,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,393.72 : 45,562.74 = 10,661.52 : x
  2. Step 2: Convert to fraction form
    30,393.72/45,562.74 = 10,661.52/x
  3. Step 3: Cross multiply
    30,393.72x = 45,562.74 × 10,661.52
  4. Step 4: Simplify right side
    30,393.72x = 485,768,063.76
  5. Step 5: Solve for x
    x = 485,768,063.76/30,393.72
  6. Step 6: Final answer
    x = 15,982.51

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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.