Home / 13,829.12-19,080.96-7,860.32

Finding the Fourth Proportional to 13,829.12, 19,080.96 and 7,860.32

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Solution

The fourth proportional to 13,829.12, 19,080.96 and 7,860.32 is: 10,845.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.12 : 19,080.96 = 7,860.32 : x
  2. Step 2: Convert to fraction form
    13,829.12/19,080.96 = 7,860.32/x
  3. Step 3: Cross multiply
    13,829.12x = 19,080.96 × 7,860.32
  4. Step 4: Simplify right side
    13,829.12x = 149,982,451.51
  5. Step 5: Solve for x
    x = 149,982,451.51/13,829.12
  6. Step 6: Final answer
    x = 10,845.41

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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.