Home / 13,347.60-20,021.40-11,619.60

Finding the Fourth Proportional to 13,347.60, 20,021.40 and 11,619.60

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Solution

The fourth proportional to 13,347.60, 20,021.40 and 11,619.60 is: 17,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.60 : 20,021.40 = 11,619.60 : x
  2. Step 2: Convert to fraction form
    13,347.60/20,021.40 = 11,619.60/x
  3. Step 3: Cross multiply
    13,347.60x = 20,021.40 × 11,619.60
  4. Step 4: Simplify right side
    13,347.60x = 232,640,659.44
  5. Step 5: Solve for x
    x = 232,640,659.44/13,347.60
  6. Step 6: Final answer
    x = 17,429.40

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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.