Home / 20,515.95-28,313.28-11,442.33

Finding the Fourth Proportional to 20,515.95, 28,313.28 and 11,442.33

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Solution

The fourth proportional to 20,515.95, 28,313.28 and 11,442.33 is: 15,791.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.95 : 28,313.28 = 11,442.33 : x
  2. Step 2: Convert to fraction form
    20,515.95/28,313.28 = 11,442.33/x
  3. Step 3: Cross multiply
    20,515.95x = 28,313.28 × 11,442.33
  4. Step 4: Simplify right side
    20,515.95x = 323,969,893.14
  5. Step 5: Solve for x
    x = 323,969,893.14/20,515.95
  6. Step 6: Final answer
    x = 15,791.12

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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.