Home / 14,142.72-21,214.68-5,378.16

Finding the Fourth Proportional to 14,142.72, 21,214.68 and 5,378.16

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Solution

The fourth proportional to 14,142.72, 21,214.68 and 5,378.16 is: 8,067.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,142.72 : 21,214.68 = 5,378.16 : x
  2. Step 2: Convert to fraction form
    14,142.72/21,214.68 = 5,378.16/x
  3. Step 3: Cross multiply
    14,142.72x = 21,214.68 × 5,378.16
  4. Step 4: Simplify right side
    14,142.72x = 114,095,943.39
  5. Step 5: Solve for x
    x = 114,095,943.39/14,142.72
  6. Step 6: Final answer
    x = 8,067.47

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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.