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Finding the Fourth Proportional to 19,119.62, 28,679.42 and 5,973.12

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Solution

The fourth proportional to 19,119.62, 28,679.42 and 5,973.12 is: 8,959.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,119.62 : 28,679.42 = 5,973.12 : x
  2. Step 2: Convert to fraction form
    19,119.62/28,679.42 = 5,973.12/x
  3. Step 3: Cross multiply
    19,119.62x = 28,679.42 × 5,973.12
  4. Step 4: Simplify right side
    19,119.62x = 171,305,617.19
  5. Step 5: Solve for x
    x = 171,305,617.19/19,119.62
  6. Step 6: Final answer
    x = 8,959.68

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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.