Home / 18,622.73-25,686.62-11,905.47

Finding the Fourth Proportional to 18,622.73, 25,686.62 and 11,905.47

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Solution

The fourth proportional to 18,622.73, 25,686.62 and 11,905.47 is: 16,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.73 : 25,686.62 = 11,905.47 : x
  2. Step 2: Convert to fraction form
    18,622.73/25,686.62 = 11,905.47/x
  3. Step 3: Cross multiply
    18,622.73x = 25,686.62 × 11,905.47
  4. Step 4: Simplify right side
    18,622.73x = 305,811,268.93
  5. Step 5: Solve for x
    x = 305,811,268.93/18,622.73
  6. Step 6: Final answer
    x = 16,421.40

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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.