Home / 20,467.84-28,246.71-11,515.90

Finding the Fourth Proportional to 20,467.84, 28,246.71 and 11,515.90

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Solution

The fourth proportional to 20,467.84, 28,246.71 and 11,515.90 is: 15,892.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.84 : 28,246.71 = 11,515.90 : x
  2. Step 2: Convert to fraction form
    20,467.84/28,246.71 = 11,515.90/x
  3. Step 3: Cross multiply
    20,467.84x = 28,246.71 × 11,515.90
  4. Step 4: Simplify right side
    20,467.84x = 325,286,287.69
  5. Step 5: Solve for x
    x = 325,286,287.69/20,467.84
  6. Step 6: Final answer
    x = 15,892.56

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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.