Home / 14,142.39-21,212.10-7,119.54

Finding the Fourth Proportional to 14,142.39, 21,212.10 and 7,119.54

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Solution

The fourth proportional to 14,142.39, 21,212.10 and 7,119.54 is: 10,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,142.39 : 21,212.10 = 7,119.54 : x
  2. Step 2: Convert to fraction form
    14,142.39/21,212.10 = 7,119.54/x
  3. Step 3: Cross multiply
    14,142.39x = 21,212.10 × 7,119.54
  4. Step 4: Simplify right side
    14,142.39x = 151,020,394.43
  5. Step 5: Solve for x
    x = 151,020,394.43/14,142.39
  6. Step 6: Final answer
    x = 10,678.56

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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.