Home / 13,178.25-18,185.88-7,435.29

Finding the Fourth Proportional to 13,178.25, 18,185.88 and 7,435.29

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Solution

The fourth proportional to 13,178.25, 18,185.88 and 7,435.29 is: 10,260.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.25 : 18,185.88 = 7,435.29 : x
  2. Step 2: Convert to fraction form
    13,178.25/18,185.88 = 7,435.29/x
  3. Step 3: Cross multiply
    13,178.25x = 18,185.88 × 7,435.29
  4. Step 4: Simplify right side
    13,178.25x = 135,217,291.71
  5. Step 5: Solve for x
    x = 135,217,291.71/13,178.25
  6. Step 6: Final answer
    x = 10,260.64

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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.