Home / 19,319.07-28,993.20-14,138.31

Finding the Fourth Proportional to 19,319.07, 28,993.20 and 14,138.31

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Solution

The fourth proportional to 19,319.07, 28,993.20 and 14,138.31 is: 21,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,319.07 : 28,993.20 = 14,138.31 : x
  2. Step 2: Convert to fraction form
    19,319.07/28,993.20 = 14,138.31/x
  3. Step 3: Cross multiply
    19,319.07x = 28,993.20 × 14,138.31
  4. Step 4: Simplify right side
    19,319.07x = 409,914,849.49
  5. Step 5: Solve for x
    x = 409,914,849.49/19,319.07
  6. Step 6: Final answer
    x = 21,218.15

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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.