Home / 12,254.40-18,403.20-11,865.60

Finding the Fourth Proportional to 12,254.40, 18,403.20 and 11,865.60

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Solution

The fourth proportional to 12,254.40, 18,403.20 and 11,865.60 is: 17,819.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,254.40 : 18,403.20 = 11,865.60 : x
  2. Step 2: Convert to fraction form
    12,254.40/18,403.20 = 11,865.60/x
  3. Step 3: Cross multiply
    12,254.40x = 18,403.20 × 11,865.60
  4. Step 4: Simplify right side
    12,254.40x = 218,365,009.92
  5. Step 5: Solve for x
    x = 218,365,009.92/12,254.40
  6. Step 6: Final answer
    x = 17,819.31

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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.