Home / 13,778.76-20,642.22-13,625.40

Finding the Fourth Proportional to 13,778.76, 20,642.22 and 13,625.40

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Solution

The fourth proportional to 13,778.76, 20,642.22 and 13,625.40 is: 20,412.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.76 : 20,642.22 = 13,625.40 : x
  2. Step 2: Convert to fraction form
    13,778.76/20,642.22 = 13,625.40/x
  3. Step 3: Cross multiply
    13,778.76x = 20,642.22 × 13,625.40
  4. Step 4: Simplify right side
    13,778.76x = 281,258,504.39
  5. Step 5: Solve for x
    x = 281,258,504.39/13,778.76
  6. Step 6: Final answer
    x = 20,412.47

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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.