Home / 13,429.60-18,534.80-11,188.32

Finding the Fourth Proportional to 13,429.60, 18,534.80 and 11,188.32

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Solution

The fourth proportional to 13,429.60, 18,534.80 and 11,188.32 is: 15,441.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.60 : 18,534.80 = 11,188.32 : x
  2. Step 2: Convert to fraction form
    13,429.60/18,534.80 = 11,188.32/x
  3. Step 3: Cross multiply
    13,429.60x = 18,534.80 × 11,188.32
  4. Step 4: Simplify right side
    13,429.60x = 207,373,273.54
  5. Step 5: Solve for x
    x = 207,373,273.54/13,429.60
  6. Step 6: Final answer
    x = 15,441.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.