Home / 12,961.26-19,416.08-9,989.33

Finding the Fourth Proportional to 12,961.26, 19,416.08 and 9,989.33

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Solution

The fourth proportional to 12,961.26, 19,416.08 and 9,989.33 is: 14,964.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.26 : 19,416.08 = 9,989.33 : x
  2. Step 2: Convert to fraction form
    12,961.26/19,416.08 = 9,989.33/x
  3. Step 3: Cross multiply
    12,961.26x = 19,416.08 × 9,989.33
  4. Step 4: Simplify right side
    12,961.26x = 193,953,483.40
  5. Step 5: Solve for x
    x = 193,953,483.40/12,961.26
  6. Step 6: Final answer
    x = 14,964.09

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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.