Home / 15,126.04-20,872.32-8,410.60

Finding the Fourth Proportional to 15,126.04, 20,872.32 and 8,410.60

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Solution

The fourth proportional to 15,126.04, 20,872.32 and 8,410.60 is: 11,605.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.04 : 20,872.32 = 8,410.60 : x
  2. Step 2: Convert to fraction form
    15,126.04/20,872.32 = 8,410.60/x
  3. Step 3: Cross multiply
    15,126.04x = 20,872.32 × 8,410.60
  4. Step 4: Simplify right side
    15,126.04x = 175,548,734.59
  5. Step 5: Solve for x
    x = 175,548,734.59/15,126.04
  6. Step 6: Final answer
    x = 11,605.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.