Home / 30,729.60-46,105.20-13,200.48

Finding the Fourth Proportional to 30,729.60, 46,105.20 and 13,200.48

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Solution

The fourth proportional to 30,729.60, 46,105.20 and 13,200.48 is: 19,805.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,729.60 : 46,105.20 = 13,200.48 : x
  2. Step 2: Convert to fraction form
    30,729.60/46,105.20 = 13,200.48/x
  3. Step 3: Cross multiply
    30,729.60x = 46,105.20 × 13,200.48
  4. Step 4: Simplify right side
    30,729.60x = 608,610,770.50
  5. Step 5: Solve for x
    x = 608,610,770.50/30,729.60
  6. Step 6: Final answer
    x = 19,805.36

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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.