Home / 13,518.48-20,279.88-4,753.68

Finding the Fourth Proportional to 13,518.48, 20,279.88 and 4,753.68

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Solution

The fourth proportional to 13,518.48, 20,279.88 and 4,753.68 is: 7,131.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.48 : 20,279.88 = 4,753.68 : x
  2. Step 2: Convert to fraction form
    13,518.48/20,279.88 = 4,753.68/x
  3. Step 3: Cross multiply
    13,518.48x = 20,279.88 × 4,753.68
  4. Step 4: Simplify right side
    13,518.48x = 96,404,059.96
  5. Step 5: Solve for x
    x = 96,404,059.96/13,518.48
  6. Step 6: Final answer
    x = 7,131.28

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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.