Home / 20,393.12-30,583.20-13,861.28

Finding the Fourth Proportional to 20,393.12, 30,583.20 and 13,861.28

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Solution

The fourth proportional to 20,393.12, 30,583.20 and 13,861.28 is: 20,787.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.12 : 30,583.20 = 13,861.28 : x
  2. Step 2: Convert to fraction form
    20,393.12/30,583.20 = 13,861.28/x
  3. Step 3: Cross multiply
    20,393.12x = 30,583.20 × 13,861.28
  4. Step 4: Simplify right side
    20,393.12x = 423,922,426.93
  5. Step 5: Solve for x
    x = 423,922,426.93/20,393.12
  6. Step 6: Final answer
    x = 20,787.52

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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.