Home / 13,412.41-20,120.78-4,176.25

Finding the Fourth Proportional to 13,412.41, 20,120.78 and 4,176.25

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Solution

The fourth proportional to 13,412.41, 20,120.78 and 4,176.25 is: 6,265.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.41 : 20,120.78 = 4,176.25 : x
  2. Step 2: Convert to fraction form
    13,412.41/20,120.78 = 4,176.25/x
  3. Step 3: Cross multiply
    13,412.41x = 20,120.78 × 4,176.25
  4. Step 4: Simplify right side
    13,412.41x = 84,029,386.59
  5. Step 5: Solve for x
    x = 84,029,386.59/13,412.41
  6. Step 6: Final answer
    x = 6,265.05

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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.