Home / 19,356.39-29,013.57-8,118.99

Finding the Fourth Proportional to 19,356.39, 29,013.57 and 8,118.99

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Solution

The fourth proportional to 19,356.39, 29,013.57 and 8,118.99 is: 12,169.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,356.39 : 29,013.57 = 8,118.99 : x
  2. Step 2: Convert to fraction form
    19,356.39/29,013.57 = 8,118.99/x
  3. Step 3: Cross multiply
    19,356.39x = 29,013.57 × 8,118.99
  4. Step 4: Simplify right side
    19,356.39x = 235,560,884.69
  5. Step 5: Solve for x
    x = 235,560,884.69/19,356.39
  6. Step 6: Final answer
    x = 12,169.67

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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.