Home / 15,217.88-20,999.20-9,550.81

Finding the Fourth Proportional to 15,217.88, 20,999.20 and 9,550.81

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Solution

The fourth proportional to 15,217.88, 20,999.20 and 9,550.81 is: 13,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,217.88 : 20,999.20 = 9,550.81 : x
  2. Step 2: Convert to fraction form
    15,217.88/20,999.20 = 9,550.81/x
  3. Step 3: Cross multiply
    15,217.88x = 20,999.20 × 9,550.81
  4. Step 4: Simplify right side
    15,217.88x = 200,559,389.63
  5. Step 5: Solve for x
    x = 200,559,389.63/15,217.88
  6. Step 6: Final answer
    x = 13,179.20

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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.