Home / 13,640.97-18,823.88-7,673.21

Finding the Fourth Proportional to 13,640.97, 18,823.88 and 7,673.21

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Solution

The fourth proportional to 13,640.97, 18,823.88 and 7,673.21 is: 10,588.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.97 : 18,823.88 = 7,673.21 : x
  2. Step 2: Convert to fraction form
    13,640.97/18,823.88 = 7,673.21/x
  3. Step 3: Cross multiply
    13,640.97x = 18,823.88 × 7,673.21
  4. Step 4: Simplify right side
    13,640.97x = 144,439,451.77
  5. Step 5: Solve for x
    x = 144,439,451.77/13,640.97
  6. Step 6: Final answer
    x = 10,588.65

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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.