Home / 20,434.81-28,200.53-11,481.77

Finding the Fourth Proportional to 20,434.81, 28,200.53 and 11,481.77

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Solution

The fourth proportional to 20,434.81, 28,200.53 and 11,481.77 is: 15,845.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.81 : 28,200.53 = 11,481.77 : x
  2. Step 2: Convert to fraction form
    20,434.81/28,200.53 = 11,481.77/x
  3. Step 3: Cross multiply
    20,434.81x = 28,200.53 × 11,481.77
  4. Step 4: Simplify right side
    20,434.81x = 323,792,047.68
  5. Step 5: Solve for x
    x = 323,792,047.68/20,434.81
  6. Step 6: Final answer
    x = 15,845.13

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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.