Home / 12,973.40-19,469.70-5,187.80

Finding the Fourth Proportional to 12,973.40, 19,469.70 and 5,187.80

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Solution

The fourth proportional to 12,973.40, 19,469.70 and 5,187.80 is: 7,785.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,973.40 : 19,469.70 = 5,187.80 : x
  2. Step 2: Convert to fraction form
    12,973.40/19,469.70 = 5,187.80/x
  3. Step 3: Cross multiply
    12,973.40x = 19,469.70 × 5,187.80
  4. Step 4: Simplify right side
    12,973.40x = 101,004,909.66
  5. Step 5: Solve for x
    x = 101,004,909.66/12,973.40
  6. Step 6: Final answer
    x = 7,785.54

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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.