Home / 28,133.55-42,205.79-8,411.67

Finding the Fourth Proportional to 28,133.55, 42,205.79 and 8,411.67

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Solution

The fourth proportional to 28,133.55, 42,205.79 and 8,411.67 is: 12,619.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.55 : 42,205.79 = 8,411.67 : x
  2. Step 2: Convert to fraction form
    28,133.55/42,205.79 = 8,411.67/x
  3. Step 3: Cross multiply
    28,133.55x = 42,205.79 × 8,411.67
  4. Step 4: Simplify right side
    28,133.55x = 355,021,198.60
  5. Step 5: Solve for x
    x = 355,021,198.60/28,133.55
  6. Step 6: Final answer
    x = 12,619.14

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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.