Home / 20,581.48-28,400.74-11,629.76

Finding the Fourth Proportional to 20,581.48, 28,400.74 and 11,629.76

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Solution

The fourth proportional to 20,581.48, 28,400.74 and 11,629.76 is: 16,048.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.48 : 28,400.74 = 11,629.76 : x
  2. Step 2: Convert to fraction form
    20,581.48/28,400.74 = 11,629.76/x
  3. Step 3: Cross multiply
    20,581.48x = 28,400.74 × 11,629.76
  4. Step 4: Simplify right side
    20,581.48x = 330,293,790.02
  5. Step 5: Solve for x
    x = 330,293,790.02/20,581.48
  6. Step 6: Final answer
    x = 16,048.11

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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.