Home / 21,975.90-30,319.27-12,414.39

Finding the Fourth Proportional to 21,975.90, 30,319.27 and 12,414.39

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Solution

The fourth proportional to 21,975.90, 30,319.27 and 12,414.39 is: 17,127.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,975.90 : 30,319.27 = 12,414.39 : x
  2. Step 2: Convert to fraction form
    21,975.90/30,319.27 = 12,414.39/x
  3. Step 3: Cross multiply
    21,975.90x = 30,319.27 × 12,414.39
  4. Step 4: Simplify right side
    21,975.90x = 376,395,242.30
  5. Step 5: Solve for x
    x = 376,395,242.30/21,975.90
  6. Step 6: Final answer
    x = 17,127.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.