Home / 28,513.09-42,766.89-8,786.35

Finding the Fourth Proportional to 28,513.09, 42,766.89 and 8,786.35

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Solution

The fourth proportional to 28,513.09, 42,766.89 and 8,786.35 is: 13,178.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.09 : 42,766.89 = 8,786.35 : x
  2. Step 2: Convert to fraction form
    28,513.09/42,766.89 = 8,786.35/x
  3. Step 3: Cross multiply
    28,513.09x = 42,766.89 × 8,786.35
  4. Step 4: Simplify right side
    28,513.09x = 375,764,650.12
  5. Step 5: Solve for x
    x = 375,764,650.12/28,513.09
  6. Step 6: Final answer
    x = 13,178.67

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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.