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Finding the Fourth Proportional to 30,608.54, 45,920.18 and 12,829.45

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Solution

The fourth proportional to 30,608.54, 45,920.18 and 12,829.45 is: 19,247.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,608.54 : 45,920.18 = 12,829.45 : x
  2. Step 2: Convert to fraction form
    30,608.54/45,920.18 = 12,829.45/x
  3. Step 3: Cross multiply
    30,608.54x = 45,920.18 × 12,829.45
  4. Step 4: Simplify right side
    30,608.54x = 589,130,570.57
  5. Step 5: Solve for x
    x = 589,130,570.57/30,608.54
  6. Step 6: Final answer
    x = 19,247.26

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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.