Home / 19,203.66-28,740.44-11,812.80

Finding the Fourth Proportional to 19,203.66, 28,740.44 and 11,812.80

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Solution

The fourth proportional to 19,203.66, 28,740.44 and 11,812.80 is: 17,679.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,203.66 : 28,740.44 = 11,812.80 : x
  2. Step 2: Convert to fraction form
    19,203.66/28,740.44 = 11,812.80/x
  3. Step 3: Cross multiply
    19,203.66x = 28,740.44 × 11,812.80
  4. Step 4: Simplify right side
    19,203.66x = 339,505,069.63
  5. Step 5: Solve for x
    x = 339,505,069.63/19,203.66
  6. Step 6: Final answer
    x = 17,679.19

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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.