Home / 19,119.12-28,678.67-5,972.63

Finding the Fourth Proportional to 19,119.12, 28,678.67 and 5,972.63

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Solution

The fourth proportional to 19,119.12, 28,678.67 and 5,972.63 is: 8,958.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,119.12 : 28,678.67 = 5,972.63 : x
  2. Step 2: Convert to fraction form
    19,119.12/28,678.67 = 5,972.63/x
  3. Step 3: Cross multiply
    19,119.12x = 28,678.67 × 5,972.63
  4. Step 4: Simplify right side
    19,119.12x = 171,286,911.55
  5. Step 5: Solve for x
    x = 171,286,911.55/19,119.12
  6. Step 6: Final answer
    x = 8,958.93

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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.