Home / 19,687.28-27,160.44-12,617.84

Finding the Fourth Proportional to 19,687.28, 27,160.44 and 12,617.84

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Solution

The fourth proportional to 19,687.28, 27,160.44 and 12,617.84 is: 17,407.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.28 : 27,160.44 = 12,617.84 : x
  2. Step 2: Convert to fraction form
    19,687.28/27,160.44 = 12,617.84/x
  3. Step 3: Cross multiply
    19,687.28x = 27,160.44 × 12,617.84
  4. Step 4: Simplify right side
    19,687.28x = 342,706,086.25
  5. Step 5: Solve for x
    x = 342,706,086.25/19,687.28
  6. Step 6: Final answer
    x = 17,407.49

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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.