Home / 13,629.51-18,807.77-7,662.06

Finding the Fourth Proportional to 13,629.51, 18,807.77 and 7,662.06

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Solution

The fourth proportional to 13,629.51, 18,807.77 and 7,662.06 is: 10,573.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.51 : 18,807.77 = 7,662.06 : x
  2. Step 2: Convert to fraction form
    13,629.51/18,807.77 = 7,662.06/x
  3. Step 3: Cross multiply
    13,629.51x = 18,807.77 × 7,662.06
  4. Step 4: Simplify right side
    13,629.51x = 144,106,281.36
  5. Step 5: Solve for x
    x = 144,106,281.36/13,629.51
  6. Step 6: Final answer
    x = 10,573.11

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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.