Home / 14,185.64-21,275.72-5,418.48

Finding the Fourth Proportional to 14,185.64, 21,275.72 and 5,418.48

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Solution

The fourth proportional to 14,185.64, 21,275.72 and 5,418.48 is: 8,126.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,185.64 : 21,275.72 = 5,418.48 : x
  2. Step 2: Convert to fraction form
    14,185.64/21,275.72 = 5,418.48/x
  3. Step 3: Cross multiply
    14,185.64x = 21,275.72 × 5,418.48
  4. Step 4: Simplify right side
    14,185.64x = 115,282,063.31
  5. Step 5: Solve for x
    x = 115,282,063.31/14,185.64
  6. Step 6: Final answer
    x = 8,126.67

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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.