Home / 21,742.62-30,004.38-12,182.39

Finding the Fourth Proportional to 21,742.62, 30,004.38 and 12,182.39

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Solution

The fourth proportional to 21,742.62, 30,004.38 and 12,182.39 is: 16,811.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,742.62 : 30,004.38 = 12,182.39 : x
  2. Step 2: Convert to fraction form
    21,742.62/30,004.38 = 12,182.39/x
  3. Step 3: Cross multiply
    21,742.62x = 30,004.38 × 12,182.39
  4. Step 4: Simplify right side
    21,742.62x = 365,525,224.40
  5. Step 5: Solve for x
    x = 365,525,224.40/21,742.62
  6. Step 6: Final answer
    x = 16,811.46

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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.