Home / 30,858.36-42,585.31-18,928.27

Finding the Fourth Proportional to 30,858.36, 42,585.31 and 18,928.27

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Solution

The fourth proportional to 30,858.36, 42,585.31 and 18,928.27 is: 26,121.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,858.36 : 42,585.31 = 18,928.27 : x
  2. Step 2: Convert to fraction form
    30,858.36/42,585.31 = 18,928.27/x
  3. Step 3: Cross multiply
    30,858.36x = 42,585.31 × 18,928.27
  4. Step 4: Simplify right side
    30,858.36x = 806,066,245.71
  5. Step 5: Solve for x
    x = 806,066,245.71/30,858.36
  6. Step 6: Final answer
    x = 26,121.49

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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.