Home / 13,673.09-18,868.92-7,931.68

Finding the Fourth Proportional to 13,673.09, 18,868.92 and 7,931.68

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Solution

The fourth proportional to 13,673.09, 18,868.92 and 7,931.68 is: 10,945.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.09 : 18,868.92 = 7,931.68 : x
  2. Step 2: Convert to fraction form
    13,673.09/18,868.92 = 7,931.68/x
  3. Step 3: Cross multiply
    13,673.09x = 18,868.92 × 7,931.68
  4. Step 4: Simplify right side
    13,673.09x = 149,662,235.39
  5. Step 5: Solve for x
    x = 149,662,235.39/13,673.09
  6. Step 6: Final answer
    x = 10,945.75

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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.