Home / 13,454.04-20,181.60-6,872.55

Finding the Fourth Proportional to 13,454.04, 20,181.60 and 6,872.55

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Solution

The fourth proportional to 13,454.04, 20,181.60 and 6,872.55 is: 10,309.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,454.04 : 20,181.60 = 6,872.55 : x
  2. Step 2: Convert to fraction form
    13,454.04/20,181.60 = 6,872.55/x
  3. Step 3: Cross multiply
    13,454.04x = 20,181.60 × 6,872.55
  4. Step 4: Simplify right side
    13,454.04x = 138,699,055.08
  5. Step 5: Solve for x
    x = 138,699,055.08/13,454.04
  6. Step 6: Final answer
    x = 10,309.10

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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.