Home / 13,518.43-18,644.88-8,673.62

Finding the Fourth Proportional to 13,518.43, 18,644.88 and 8,673.62

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Solution

The fourth proportional to 13,518.43, 18,644.88 and 8,673.62 is: 11,962.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.43 : 18,644.88 = 8,673.62 : x
  2. Step 2: Convert to fraction form
    13,518.43/18,644.88 = 8,673.62/x
  3. Step 3: Cross multiply
    13,518.43x = 18,644.88 × 8,673.62
  4. Step 4: Simplify right side
    13,518.43x = 161,718,510.84
  5. Step 5: Solve for x
    x = 161,718,510.84/13,518.43
  6. Step 6: Final answer
    x = 11,962.82

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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.