Home / 30,928.77-42,679.10-18,182.37

Finding the Fourth Proportional to 30,928.77, 42,679.10 and 18,182.37

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Solution

The fourth proportional to 30,928.77, 42,679.10 and 18,182.37 is: 25,090.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,928.77 : 42,679.10 = 18,182.37 : x
  2. Step 2: Convert to fraction form
    30,928.77/42,679.10 = 18,182.37/x
  3. Step 3: Cross multiply
    30,928.77x = 42,679.10 × 18,182.37
  4. Step 4: Simplify right side
    30,928.77x = 776,007,392.97
  5. Step 5: Solve for x
    x = 776,007,392.97/30,928.77
  6. Step 6: Final answer
    x = 25,090.15

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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.