Home / 30,810.80-42,517.56-17,382.32

Finding the Fourth Proportional to 30,810.80, 42,517.56 and 17,382.32

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Solution

The fourth proportional to 30,810.80, 42,517.56 and 17,382.32 is: 23,986.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.80 : 42,517.56 = 17,382.32 : x
  2. Step 2: Convert to fraction form
    30,810.80/42,517.56 = 17,382.32/x
  3. Step 3: Cross multiply
    30,810.80x = 42,517.56 × 17,382.32
  4. Step 4: Simplify right side
    30,810.80x = 739,053,833.54
  5. Step 5: Solve for x
    x = 739,053,833.54/30,810.80
  6. Step 6: Final answer
    x = 23,986.84

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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.