Home / 11,878.66-16,390.34-7,630.48

Finding the Fourth Proportional to 11,878.66, 16,390.34 and 7,630.48

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Solution

The fourth proportional to 11,878.66, 16,390.34 and 7,630.48 is: 10,528.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.66 : 16,390.34 = 7,630.48 : x
  2. Step 2: Convert to fraction form
    11,878.66/16,390.34 = 7,630.48/x
  3. Step 3: Cross multiply
    11,878.66x = 16,390.34 × 7,630.48
  4. Step 4: Simplify right side
    11,878.66x = 125,066,161.56
  5. Step 5: Solve for x
    x = 125,066,161.56/11,878.66
  6. Step 6: Final answer
    x = 10,528.64

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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.