Home / 12,678.50-19,004.33-4,777.58

Finding the Fourth Proportional to 12,678.50, 19,004.33 and 4,777.58

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Solution

The fourth proportional to 12,678.50, 19,004.33 and 4,777.58 is: 7,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.50 : 19,004.33 = 4,777.58 : x
  2. Step 2: Convert to fraction form
    12,678.50/19,004.33 = 4,777.58/x
  3. Step 3: Cross multiply
    12,678.50x = 19,004.33 × 4,777.58
  4. Step 4: Simplify right side
    12,678.50x = 90,794,706.92
  5. Step 5: Solve for x
    x = 90,794,706.92/12,678.50
  6. Step 6: Final answer
    x = 7,161.31

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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.