Home / 13,080.96-18,051.12-7,776.36

Finding the Fourth Proportional to 13,080.96, 18,051.12 and 7,776.36

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Solution

The fourth proportional to 13,080.96, 18,051.12 and 7,776.36 is: 10,731.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.96 : 18,051.12 = 7,776.36 : x
  2. Step 2: Convert to fraction form
    13,080.96/18,051.12 = 7,776.36/x
  3. Step 3: Cross multiply
    13,080.96x = 18,051.12 × 7,776.36
  4. Step 4: Simplify right side
    13,080.96x = 140,372,007.52
  5. Step 5: Solve for x
    x = 140,372,007.52/13,080.96
  6. Step 6: Final answer
    x = 10,731.02

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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.