Home / 13,581.63-20,370.26-3,718.60

Finding the Fourth Proportional to 13,581.63, 20,370.26 and 3,718.60

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Solution

The fourth proportional to 13,581.63, 20,370.26 and 3,718.60 is: 5,577.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.63 : 20,370.26 = 3,718.60 : x
  2. Step 2: Convert to fraction form
    13,581.63/20,370.26 = 3,718.60/x
  3. Step 3: Cross multiply
    13,581.63x = 20,370.26 × 3,718.60
  4. Step 4: Simplify right side
    13,581.63x = 75,748,897.01
  5. Step 5: Solve for x
    x = 75,748,897.01/13,581.63
  6. Step 6: Final answer
    x = 5,577.31

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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.