Home / 19,330.24-28,957.80-11,912.80

Finding the Fourth Proportional to 19,330.24, 28,957.80 and 11,912.80

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Solution

The fourth proportional to 19,330.24, 28,957.80 and 11,912.80 is: 17,846.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,330.24 : 28,957.80 = 11,912.80 : x
  2. Step 2: Convert to fraction form
    19,330.24/28,957.80 = 11,912.80/x
  3. Step 3: Cross multiply
    19,330.24x = 28,957.80 × 11,912.80
  4. Step 4: Simplify right side
    19,330.24x = 344,968,479.84
  5. Step 5: Solve for x
    x = 344,968,479.84/19,330.24
  6. Step 6: Final answer
    x = 17,846.05

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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.