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Finding the Fourth Proportional to 14,045.36, 21,067.28 and 7,119.68

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Solution

The fourth proportional to 14,045.36, 21,067.28 and 7,119.68 is: 10,679.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,045.36 : 21,067.28 = 7,119.68 : x
  2. Step 2: Convert to fraction form
    14,045.36/21,067.28 = 7,119.68/x
  3. Step 3: Cross multiply
    14,045.36x = 21,067.28 × 7,119.68
  4. Step 4: Simplify right side
    14,045.36x = 149,992,292.07
  5. Step 5: Solve for x
    x = 149,992,292.07/14,045.36
  6. Step 6: Final answer
    x = 10,679.13

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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.