Home / 30,662.66-42,318.40-18,723.48

Finding the Fourth Proportional to 30,662.66, 42,318.40 and 18,723.48

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Solution

The fourth proportional to 30,662.66, 42,318.40 and 18,723.48 is: 25,840.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,662.66 : 42,318.40 = 18,723.48 : x
  2. Step 2: Convert to fraction form
    30,662.66/42,318.40 = 18,723.48/x
  3. Step 3: Cross multiply
    30,662.66x = 42,318.40 × 18,723.48
  4. Step 4: Simplify right side
    30,662.66x = 792,347,716.03
  5. Step 5: Solve for x
    x = 792,347,716.03/30,662.66
  6. Step 6: Final answer
    x = 25,840.80

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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.