Home / 13,412.94-20,121.53-4,051.80

Finding the Fourth Proportional to 13,412.94, 20,121.53 and 4,051.80

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Solution

The fourth proportional to 13,412.94, 20,121.53 and 4,051.80 is: 6,078.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.94 : 20,121.53 = 4,051.80 : x
  2. Step 2: Convert to fraction form
    13,412.94/20,121.53 = 4,051.80/x
  3. Step 3: Cross multiply
    13,412.94x = 20,121.53 × 4,051.80
  4. Step 4: Simplify right side
    13,412.94x = 81,528,294.39
  5. Step 5: Solve for x
    x = 81,528,294.39/13,412.94
  6. Step 6: Final answer
    x = 6,078.33

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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.