Home / 13,080.69-18,043.97-7,777.22

Finding the Fourth Proportional to 13,080.69, 18,043.97 and 7,777.22

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Solution

The fourth proportional to 13,080.69, 18,043.97 and 7,777.22 is: 10,728.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.69 : 18,043.97 = 7,777.22 : x
  2. Step 2: Convert to fraction form
    13,080.69/18,043.97 = 7,777.22/x
  3. Step 3: Cross multiply
    13,080.69x = 18,043.97 × 7,777.22
  4. Step 4: Simplify right side
    13,080.69x = 140,331,795.26
  5. Step 5: Solve for x
    x = 140,331,795.26/13,080.69
  6. Step 6: Final answer
    x = 10,728.16

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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.