Home / 22,190.26-30,621.32-12,629.86

Finding the Fourth Proportional to 22,190.26, 30,621.32 and 12,629.86

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Solution

The fourth proportional to 22,190.26, 30,621.32 and 12,629.86 is: 17,428.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,190.26 : 30,621.32 = 12,629.86 : x
  2. Step 2: Convert to fraction form
    22,190.26/30,621.32 = 12,629.86/x
  3. Step 3: Cross multiply
    22,190.26x = 30,621.32 × 12,629.86
  4. Step 4: Simplify right side
    22,190.26x = 386,742,984.62
  5. Step 5: Solve for x
    x = 386,742,984.62/22,190.26
  6. Step 6: Final answer
    x = 17,428.50

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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.