Home / 13,742.72-18,962.64-8,076.32

Finding the Fourth Proportional to 13,742.72, 18,962.64 and 8,076.32

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Solution

The fourth proportional to 13,742.72, 18,962.64 and 8,076.32 is: 11,143.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.72 : 18,962.64 = 8,076.32 : x
  2. Step 2: Convert to fraction form
    13,742.72/18,962.64 = 8,076.32/x
  3. Step 3: Cross multiply
    13,742.72x = 18,962.64 × 8,076.32
  4. Step 4: Simplify right side
    13,742.72x = 153,148,348.68
  5. Step 5: Solve for x
    x = 153,148,348.68/13,742.72
  6. Step 6: Final answer
    x = 11,143.96

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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.