Home / 13,560.56-20,221.52-12,483.44

Finding the Fourth Proportional to 13,560.56, 20,221.52 and 12,483.44

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Solution

The fourth proportional to 13,560.56, 20,221.52 and 12,483.44 is: 18,615.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.56 : 20,221.52 = 12,483.44 : x
  2. Step 2: Convert to fraction form
    13,560.56/20,221.52 = 12,483.44/x
  3. Step 3: Cross multiply
    13,560.56x = 20,221.52 × 12,483.44
  4. Step 4: Simplify right side
    13,560.56x = 252,434,131.63
  5. Step 5: Solve for x
    x = 252,434,131.63/13,560.56
  6. Step 6: Final answer
    x = 18,615.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.