Home / 12,968.79-19,434.78-9,996

Finding the Fourth Proportional to 12,968.79, 19,434.78 and 9,996

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Solution

The fourth proportional to 12,968.79, 19,434.78 and 9,996 is: 14,979.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968.79 : 19,434.78 = 9,996 : x
  2. Step 2: Convert to fraction form
    12,968.79/19,434.78 = 9,996/x
  3. Step 3: Cross multiply
    12,968.79x = 19,434.78 × 9,996
  4. Step 4: Simplify right side
    12,968.79x = 194,270,060.88
  5. Step 5: Solve for x
    x = 194,270,060.88/12,968.79
  6. Step 6: Final answer
    x = 14,979.81

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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.