Home / 13,078.40-18,052.96-8,049.36

Finding the Fourth Proportional to 13,078.40, 18,052.96 and 8,049.36

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Solution

The fourth proportional to 13,078.40, 18,052.96 and 8,049.36 is: 11,111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.40 : 18,052.96 = 8,049.36 : x
  2. Step 2: Convert to fraction form
    13,078.40/18,052.96 = 8,049.36/x
  3. Step 3: Cross multiply
    13,078.40x = 18,052.96 × 8,049.36
  4. Step 4: Simplify right side
    13,078.40x = 145,314,774.11
  5. Step 5: Solve for x
    x = 145,314,774.11/13,078.40
  6. Step 6: Final answer
    x = 11,111.05

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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.