Home / 13,647.21-20,470.82-4,881.60

Finding the Fourth Proportional to 13,647.21, 20,470.82 and 4,881.60

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Solution

The fourth proportional to 13,647.21, 20,470.82 and 4,881.60 is: 7,322.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.21 : 20,470.82 = 4,881.60 : x
  2. Step 2: Convert to fraction form
    13,647.21/20,470.82 = 4,881.60/x
  3. Step 3: Cross multiply
    13,647.21x = 20,470.82 × 4,881.60
  4. Step 4: Simplify right side
    13,647.21x = 99,930,354.91
  5. Step 5: Solve for x
    x = 99,930,354.91/13,647.21
  6. Step 6: Final answer
    x = 7,322.40

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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.