Home / 13,512.74-20,268.87-4,278.50

Finding the Fourth Proportional to 13,512.74, 20,268.87 and 4,278.50

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Solution

The fourth proportional to 13,512.74, 20,268.87 and 4,278.50 is: 6,417.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.74 : 20,268.87 = 4,278.50 : x
  2. Step 2: Convert to fraction form
    13,512.74/20,268.87 = 4,278.50/x
  3. Step 3: Cross multiply
    13,512.74x = 20,268.87 × 4,278.50
  4. Step 4: Simplify right side
    13,512.74x = 86,720,360.30
  5. Step 5: Solve for x
    x = 86,720,360.30/13,512.74
  6. Step 6: Final answer
    x = 6,417.67

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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.