Home / 68,821.91-103,213.03-18,903.63

Finding the Fourth Proportional to 68,821.91, 103,213.03 and 18,903.63

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Solution

The fourth proportional to 68,821.91, 103,213.03 and 18,903.63 is: 28,350.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,821.91 : 103,213.03 = 18,903.63 : x
  2. Step 2: Convert to fraction form
    68,821.91/103,213.03 = 18,903.63/x
  3. Step 3: Cross multiply
    68,821.91x = 103,213.03 × 18,903.63
  4. Step 4: Simplify right side
    68,821.91x = 1,951,100,835.78
  5. Step 5: Solve for x
    x = 1,951,100,835.78/68,821.91
  6. Step 6: Final answer
    x = 28,350.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.