Home / 13,742.09-18,964.54-8,076.75

Finding the Fourth Proportional to 13,742.09, 18,964.54 and 8,076.75

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Solution

The fourth proportional to 13,742.09, 18,964.54 and 8,076.75 is: 11,146.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.09 : 18,964.54 = 8,076.75 : x
  2. Step 2: Convert to fraction form
    13,742.09/18,964.54 = 8,076.75/x
  3. Step 3: Cross multiply
    13,742.09x = 18,964.54 × 8,076.75
  4. Step 4: Simplify right side
    13,742.09x = 153,171,848.45
  5. Step 5: Solve for x
    x = 153,171,848.45/13,742.09
  6. Step 6: Final answer
    x = 11,146.19

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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.