Home / 13,629.58-18,807.19-7,578.31

Finding the Fourth Proportional to 13,629.58, 18,807.19 and 7,578.31

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Solution

The fourth proportional to 13,629.58, 18,807.19 and 7,578.31 is: 10,457.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.58 : 18,807.19 = 7,578.31 : x
  2. Step 2: Convert to fraction form
    13,629.58/18,807.19 = 7,578.31/x
  3. Step 3: Cross multiply
    13,629.58x = 18,807.19 × 7,578.31
  4. Step 4: Simplify right side
    13,629.58x = 142,526,685.35
  5. Step 5: Solve for x
    x = 142,526,685.35/13,629.58
  6. Step 6: Final answer
    x = 10,457.16

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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.