Home / 13,078.23-18,047.84-7,110.06

Finding the Fourth Proportional to 13,078.23, 18,047.84 and 7,110.06

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Solution

The fourth proportional to 13,078.23, 18,047.84 and 7,110.06 is: 9,811.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.23 : 18,047.84 = 7,110.06 : x
  2. Step 2: Convert to fraction form
    13,078.23/18,047.84 = 7,110.06/x
  3. Step 3: Cross multiply
    13,078.23x = 18,047.84 × 7,110.06
  4. Step 4: Simplify right side
    13,078.23x = 128,321,189.72
  5. Step 5: Solve for x
    x = 128,321,189.72/13,078.23
  6. Step 6: Final answer
    x = 9,811.82

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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.