Home / 12,722.81-19,087.47-3,957.80

Finding the Fourth Proportional to 12,722.81, 19,087.47 and 3,957.80

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Solution

The fourth proportional to 12,722.81, 19,087.47 and 3,957.80 is: 5,937.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,722.81 : 19,087.47 = 3,957.80 : x
  2. Step 2: Convert to fraction form
    12,722.81/19,087.47 = 3,957.80/x
  3. Step 3: Cross multiply
    12,722.81x = 19,087.47 × 3,957.80
  4. Step 4: Simplify right side
    12,722.81x = 75,544,388.77
  5. Step 5: Solve for x
    x = 75,544,388.77/12,722.81
  6. Step 6: Final answer
    x = 5,937.71

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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.