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Finding the Fourth Proportional to 22,103.48, 30,485.22 and 15,631.64

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Solution

The fourth proportional to 22,103.48, 30,485.22 and 15,631.64 is: 21,559.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,103.48 : 30,485.22 = 15,631.64 : x
  2. Step 2: Convert to fraction form
    22,103.48/30,485.22 = 15,631.64/x
  3. Step 3: Cross multiply
    22,103.48x = 30,485.22 × 15,631.64
  4. Step 4: Simplify right side
    22,103.48x = 476,533,984.36
  5. Step 5: Solve for x
    x = 476,533,984.36/22,103.48
  6. Step 6: Final answer
    x = 21,559.23

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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.