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Finding the Fourth Proportional to 19,321.99, 28,987.12 and 5,994.70

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Solution

The fourth proportional to 19,321.99, 28,987.12 and 5,994.70 is: 8,993.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.99 : 28,987.12 = 5,994.70 : x
  2. Step 2: Convert to fraction form
    19,321.99/28,987.12 = 5,994.70/x
  3. Step 3: Cross multiply
    19,321.99x = 28,987.12 × 5,994.70
  4. Step 4: Simplify right side
    19,321.99x = 173,769,088.26
  5. Step 5: Solve for x
    x = 173,769,088.26/19,321.99
  6. Step 6: Final answer
    x = 8,993.33

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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.