Home / 30,733.43-42,393.78-19,382.90

Finding the Fourth Proportional to 30,733.43, 42,393.78 and 19,382.90

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Solution

The fourth proportional to 30,733.43, 42,393.78 and 19,382.90 is: 26,736.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,733.43 : 42,393.78 = 19,382.90 : x
  2. Step 2: Convert to fraction form
    30,733.43/42,393.78 = 19,382.90/x
  3. Step 3: Cross multiply
    30,733.43x = 42,393.78 × 19,382.90
  4. Step 4: Simplify right side
    30,733.43x = 821,714,186.39
  5. Step 5: Solve for x
    x = 821,714,186.39/30,733.43
  6. Step 6: Final answer
    x = 26,736.82

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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.