Home / 20,604.71-28,436.27-11,653.81

Finding the Fourth Proportional to 20,604.71, 28,436.27 and 11,653.81

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Solution

The fourth proportional to 20,604.71, 28,436.27 and 11,653.81 is: 16,083.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.71 : 28,436.27 = 11,653.81 : x
  2. Step 2: Convert to fraction form
    20,604.71/28,436.27 = 11,653.81/x
  3. Step 3: Cross multiply
    20,604.71x = 28,436.27 × 11,653.81
  4. Step 4: Simplify right side
    20,604.71x = 331,390,758.33
  5. Step 5: Solve for x
    x = 331,390,758.33/20,604.71
  6. Step 6: Final answer
    x = 16,083.25

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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.