Home / 20,359.75-30,678.32-16,742.99

Finding the Fourth Proportional to 20,359.75, 30,678.32 and 16,742.99

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Solution

The fourth proportional to 20,359.75, 30,678.32 and 16,742.99 is: 25,228.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.75 : 30,678.32 = 16,742.99 : x
  2. Step 2: Convert to fraction form
    20,359.75/30,678.32 = 16,742.99/x
  3. Step 3: Cross multiply
    20,359.75x = 30,678.32 × 16,742.99
  4. Step 4: Simplify right side
    20,359.75x = 513,646,804.98
  5. Step 5: Solve for x
    x = 513,646,804.98/20,359.75
  6. Step 6: Final answer
    x = 25,228.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.