Home / 13,629.60-20,444.40-9,911.70

Finding the Fourth Proportional to 13,629.60, 20,444.40 and 9,911.70

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Solution

The fourth proportional to 13,629.60, 20,444.40 and 9,911.70 is: 14,867.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.60 : 20,444.40 = 9,911.70 : x
  2. Step 2: Convert to fraction form
    13,629.60/20,444.40 = 9,911.70/x
  3. Step 3: Cross multiply
    13,629.60x = 20,444.40 × 9,911.70
  4. Step 4: Simplify right side
    13,629.60x = 202,638,759.48
  5. Step 5: Solve for x
    x = 202,638,759.48/13,629.60
  6. Step 6: Final answer
    x = 14,867.55

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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.