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Finding the Fourth Proportional to 12,558.01, 18,693.49 and 12,371.08

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Solution

The fourth proportional to 12,558.01, 18,693.49 and 12,371.08 is: 18,415.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.01 : 18,693.49 = 12,371.08 : x
  2. Step 2: Convert to fraction form
    12,558.01/18,693.49 = 12,371.08/x
  3. Step 3: Cross multiply
    12,558.01x = 18,693.49 × 12,371.08
  4. Step 4: Simplify right side
    12,558.01x = 231,258,660.27
  5. Step 5: Solve for x
    x = 231,258,660.27/12,558.01
  6. Step 6: Final answer
    x = 18,415.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.