Home / 20,511.94-28,307.31-11,559.82

Finding the Fourth Proportional to 20,511.94, 28,307.31 and 11,559.82

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Solution

The fourth proportional to 20,511.94, 28,307.31 and 11,559.82 is: 15,953.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.94 : 28,307.31 = 11,559.82 : x
  2. Step 2: Convert to fraction form
    20,511.94/28,307.31 = 11,559.82/x
  3. Step 3: Cross multiply
    20,511.94x = 28,307.31 × 11,559.82
  4. Step 4: Simplify right side
    20,511.94x = 327,227,408.28
  5. Step 5: Solve for x
    x = 327,227,408.28/20,511.94
  6. Step 6: Final answer
    x = 15,953.02

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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.