Home / 12,930.33-19,357.22-7,984.07

Finding the Fourth Proportional to 12,930.33, 19,357.22 and 7,984.07

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Solution

The fourth proportional to 12,930.33, 19,357.22 and 7,984.07 is: 11,952.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.33 : 19,357.22 = 7,984.07 : x
  2. Step 2: Convert to fraction form
    12,930.33/19,357.22 = 7,984.07/x
  3. Step 3: Cross multiply
    12,930.33x = 19,357.22 × 7,984.07
  4. Step 4: Simplify right side
    12,930.33x = 154,549,399.49
  5. Step 5: Solve for x
    x = 154,549,399.49/12,930.33
  6. Step 6: Final answer
    x = 11,952.47

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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.