Home / 20,895.64-28,838.46-12,511.96

Finding the Fourth Proportional to 20,895.64, 28,838.46 and 12,511.96

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Solution

The fourth proportional to 20,895.64, 28,838.46 and 12,511.96 is: 17,267.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.64 : 28,838.46 = 12,511.96 : x
  2. Step 2: Convert to fraction form
    20,895.64/28,838.46 = 12,511.96/x
  3. Step 3: Cross multiply
    20,895.64x = 28,838.46 × 12,511.96
  4. Step 4: Simplify right side
    20,895.64x = 360,825,657.98
  5. Step 5: Solve for x
    x = 360,825,657.98/20,895.64
  6. Step 6: Final answer
    x = 17,267.99

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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.