Home / 13,401.09-20,112.54-5,615.37

Finding the Fourth Proportional to 13,401.09, 20,112.54 and 5,615.37

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Solution

The fourth proportional to 13,401.09, 20,112.54 and 5,615.37 is: 8,427.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.09 : 20,112.54 = 5,615.37 : x
  2. Step 2: Convert to fraction form
    13,401.09/20,112.54 = 5,615.37/x
  3. Step 3: Cross multiply
    13,401.09x = 20,112.54 × 5,615.37
  4. Step 4: Simplify right side
    13,401.09x = 112,939,353.74
  5. Step 5: Solve for x
    x = 112,939,353.74/13,401.09
  6. Step 6: Final answer
    x = 8,427.62

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1.5x scale

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.