Home / 13,080.22-18,045.75-8,040.40

Finding the Fourth Proportional to 13,080.22, 18,045.75 and 8,040.40

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Solution

The fourth proportional to 13,080.22, 18,045.75 and 8,040.40 is: 11,092.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.22 : 18,045.75 = 8,040.40 : x
  2. Step 2: Convert to fraction form
    13,080.22/18,045.75 = 8,040.40/x
  3. Step 3: Cross multiply
    13,080.22x = 18,045.75 × 8,040.40
  4. Step 4: Simplify right side
    13,080.22x = 145,095,048.30
  5. Step 5: Solve for x
    x = 145,095,048.30/13,080.22
  6. Step 6: Final answer
    x = 11,092.71

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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.