Home / 13,118.41-18,101.46-7,813.09

Finding the Fourth Proportional to 13,118.41, 18,101.46 and 7,813.09

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Solution

The fourth proportional to 13,118.41, 18,101.46 and 7,813.09 is: 10,780.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.41 : 18,101.46 = 7,813.09 : x
  2. Step 2: Convert to fraction form
    13,118.41/18,101.46 = 7,813.09/x
  3. Step 3: Cross multiply
    13,118.41x = 18,101.46 × 7,813.09
  4. Step 4: Simplify right side
    13,118.41x = 141,428,336.11
  5. Step 5: Solve for x
    x = 141,428,336.11/13,118.41
  6. Step 6: Final answer
    x = 10,780.91

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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.