Home / 12,749.36-19,102.45-7,808.68

Finding the Fourth Proportional to 12,749.36, 19,102.45 and 7,808.68

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Solution

The fourth proportional to 12,749.36, 19,102.45 and 7,808.68 is: 11,699.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.36 : 19,102.45 = 7,808.68 : x
  2. Step 2: Convert to fraction form
    12,749.36/19,102.45 = 7,808.68/x
  3. Step 3: Cross multiply
    12,749.36x = 19,102.45 × 7,808.68
  4. Step 4: Simplify right side
    12,749.36x = 149,164,919.27
  5. Step 5: Solve for x
    x = 149,164,919.27/12,749.36
  6. Step 6: Final answer
    x = 11,699.80

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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.