Home / 15,794.27-21,796.25-8,720.67

Finding the Fourth Proportional to 15,794.27, 21,796.25 and 8,720.67

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Solution

The fourth proportional to 15,794.27, 21,796.25 and 8,720.67 is: 12,034.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,794.27 : 21,796.25 = 8,720.67 : x
  2. Step 2: Convert to fraction form
    15,794.27/21,796.25 = 8,720.67/x
  3. Step 3: Cross multiply
    15,794.27x = 21,796.25 × 8,720.67
  4. Step 4: Simplify right side
    15,794.27x = 190,077,881.69
  5. Step 5: Solve for x
    x = 190,077,881.69/15,794.27
  6. Step 6: Final answer
    x = 12,034.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.