Home / 13,440.47-20,161.98-3,580.34

Finding the Fourth Proportional to 13,440.47, 20,161.98 and 3,580.34

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Solution

The fourth proportional to 13,440.47, 20,161.98 and 3,580.34 is: 5,370.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.47 : 20,161.98 = 3,580.34 : x
  2. Step 2: Convert to fraction form
    13,440.47/20,161.98 = 3,580.34/x
  3. Step 3: Cross multiply
    13,440.47x = 20,161.98 × 3,580.34
  4. Step 4: Simplify right side
    13,440.47x = 72,186,642.66
  5. Step 5: Solve for x
    x = 72,186,642.66/13,440.47
  6. Step 6: Final answer
    x = 5,370.84

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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.