Home / 13,769.36-20,539.35-12,440.60

Finding the Fourth Proportional to 13,769.36, 20,539.35 and 12,440.60

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Solution

The fourth proportional to 13,769.36, 20,539.35 and 12,440.60 is: 18,557.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769.36 : 20,539.35 = 12,440.60 : x
  2. Step 2: Convert to fraction form
    13,769.36/20,539.35 = 12,440.60/x
  3. Step 3: Cross multiply
    13,769.36x = 20,539.35 × 12,440.60
  4. Step 4: Simplify right side
    13,769.36x = 255,521,775.41
  5. Step 5: Solve for x
    x = 255,521,775.41/13,769.36
  6. Step 6: Final answer
    x = 18,557.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.