Home / 20,313.09-28,030.32-11,813.54

Finding the Fourth Proportional to 20,313.09, 28,030.32 and 11,813.54

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Solution

The fourth proportional to 20,313.09, 28,030.32 and 11,813.54 is: 16,301.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.09 : 28,030.32 = 11,813.54 : x
  2. Step 2: Convert to fraction form
    20,313.09/28,030.32 = 11,813.54/x
  3. Step 3: Cross multiply
    20,313.09x = 28,030.32 × 11,813.54
  4. Step 4: Simplify right side
    20,313.09x = 331,137,166.38
  5. Step 5: Solve for x
    x = 331,137,166.38/20,313.09
  6. Step 6: Final answer
    x = 16,301.66

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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.