Home / 20,405.09-30,607.58-11,516.39

Finding the Fourth Proportional to 20,405.09, 30,607.58 and 11,516.39

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Solution

The fourth proportional to 20,405.09, 30,607.58 and 11,516.39 is: 17,274.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.09 : 30,607.58 = 11,516.39 : x
  2. Step 2: Convert to fraction form
    20,405.09/30,607.58 = 11,516.39/x
  3. Step 3: Cross multiply
    20,405.09x = 30,607.58 × 11,516.39
  4. Step 4: Simplify right side
    20,405.09x = 352,488,828.24
  5. Step 5: Solve for x
    x = 352,488,828.24/20,405.09
  6. Step 6: Final answer
    x = 17,274.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.