Home / 30,516.89-45,786.60-12,749.47

Finding the Fourth Proportional to 30,516.89, 45,786.60 and 12,749.47

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Solution

The fourth proportional to 30,516.89, 45,786.60 and 12,749.47 is: 19,128.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,516.89 : 45,786.60 = 12,749.47 : x
  2. Step 2: Convert to fraction form
    30,516.89/45,786.60 = 12,749.47/x
  3. Step 3: Cross multiply
    30,516.89x = 45,786.60 × 12,749.47
  4. Step 4: Simplify right side
    30,516.89x = 583,754,768.64
  5. Step 5: Solve for x
    x = 583,754,768.64/30,516.89
  6. Step 6: Final answer
    x = 19,128.91

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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.