Home / 11,090.16-15,297.39-8,431.74

Finding the Fourth Proportional to 11,090.16, 15,297.39 and 8,431.74

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Solution

The fourth proportional to 11,090.16, 15,297.39 and 8,431.74 is: 11,630.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,090.16 : 15,297.39 = 8,431.74 : x
  2. Step 2: Convert to fraction form
    11,090.16/15,297.39 = 8,431.74/x
  3. Step 3: Cross multiply
    11,090.16x = 15,297.39 × 8,431.74
  4. Step 4: Simplify right side
    11,090.16x = 128,983,615.16
  5. Step 5: Solve for x
    x = 128,983,615.16/11,090.16
  6. Step 6: Final answer
    x = 11,630.46

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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.