Home / 19,639.97-27,102.71-10,687.49

Finding the Fourth Proportional to 19,639.97, 27,102.71 and 10,687.49

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Solution

The fourth proportional to 19,639.97, 27,102.71 and 10,687.49 is: 14,748.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.97 : 27,102.71 = 10,687.49 : x
  2. Step 2: Convert to fraction form
    19,639.97/27,102.71 = 10,687.49/x
  3. Step 3: Cross multiply
    19,639.97x = 27,102.71 × 10,687.49
  4. Step 4: Simplify right side
    19,639.97x = 289,660,036.57
  5. Step 5: Solve for x
    x = 289,660,036.57/19,639.97
  6. Step 6: Final answer
    x = 14,748.50

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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.