Home / 15,221.04-21,004.97-8,506.67

Finding the Fourth Proportional to 15,221.04, 21,004.97 and 8,506.67

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Solution

The fourth proportional to 15,221.04, 21,004.97 and 8,506.67 is: 11,739.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221.04 : 21,004.97 = 8,506.67 : x
  2. Step 2: Convert to fraction form
    15,221.04/21,004.97 = 8,506.67/x
  3. Step 3: Cross multiply
    15,221.04x = 21,004.97 × 8,506.67
  4. Step 4: Simplify right side
    15,221.04x = 178,682,243.13
  5. Step 5: Solve for x
    x = 178,682,243.13/15,221.04
  6. Step 6: Final answer
    x = 11,739.16

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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.