Home / 14,511.52-21,764.40-7,112.80

Finding the Fourth Proportional to 14,511.52, 21,764.40 and 7,112.80

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Solution

The fourth proportional to 14,511.52, 21,764.40 and 7,112.80 is: 10,667.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,511.52 : 21,764.40 = 7,112.80 : x
  2. Step 2: Convert to fraction form
    14,511.52/21,764.40 = 7,112.80/x
  3. Step 3: Cross multiply
    14,511.52x = 21,764.40 × 7,112.80
  4. Step 4: Simplify right side
    14,511.52x = 154,805,824.32
  5. Step 5: Solve for x
    x = 154,805,824.32/14,511.52
  6. Step 6: Final answer
    x = 10,667.79

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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.