Home / 13,405.70-20,110.35-4,643.30

Finding the Fourth Proportional to 13,405.70, 20,110.35 and 4,643.30

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Solution

The fourth proportional to 13,405.70, 20,110.35 and 4,643.30 is: 6,965.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.70 : 20,110.35 = 4,643.30 : x
  2. Step 2: Convert to fraction form
    13,405.70/20,110.35 = 4,643.30/x
  3. Step 3: Cross multiply
    13,405.70x = 20,110.35 × 4,643.30
  4. Step 4: Simplify right side
    13,405.70x = 93,378,388.16
  5. Step 5: Solve for x
    x = 93,378,388.16/13,405.70
  6. Step 6: Final answer
    x = 6,965.57

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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.