Home / 13,512.25-20,271.62-4,278.25

Finding the Fourth Proportional to 13,512.25, 20,271.62 and 4,278.25

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Solution

The fourth proportional to 13,512.25, 20,271.62 and 4,278.25 is: 6,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.25 : 20,271.62 = 4,278.25 : x
  2. Step 2: Convert to fraction form
    13,512.25/20,271.62 = 4,278.25/x
  3. Step 3: Cross multiply
    13,512.25x = 20,271.62 × 4,278.25
  4. Step 4: Simplify right side
    13,512.25x = 86,727,058.27
  5. Step 5: Solve for x
    x = 86,727,058.27/13,512.25
  6. Step 6: Final answer
    x = 6,418.40

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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.