Home / 13,412.03-20,118.05-4,178.75

Finding the Fourth Proportional to 13,412.03, 20,118.05 and 4,178.75

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Solution

The fourth proportional to 13,412.03, 20,118.05 and 4,178.75 is: 6,268.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.03 : 20,118.05 = 4,178.75 : x
  2. Step 2: Convert to fraction form
    13,412.03/20,118.05 = 4,178.75/x
  3. Step 3: Cross multiply
    13,412.03x = 20,118.05 × 4,178.75
  4. Step 4: Simplify right side
    13,412.03x = 84,068,301.44
  5. Step 5: Solve for x
    x = 84,068,301.44/13,412.03
  6. Step 6: Final answer
    x = 6,268.13

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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.