Home / 19,639.60-27,101.84-10,687.12

Finding the Fourth Proportional to 19,639.60, 27,101.84 and 10,687.12

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Solution

The fourth proportional to 19,639.60, 27,101.84 and 10,687.12 is: 14,747.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.60 : 27,101.84 = 10,687.12 : x
  2. Step 2: Convert to fraction form
    19,639.60/27,101.84 = 10,687.12/x
  3. Step 3: Cross multiply
    19,639.60x = 27,101.84 × 10,687.12
  4. Step 4: Simplify right side
    19,639.60x = 289,640,495.11
  5. Step 5: Solve for x
    x = 289,640,495.11/19,639.60
  6. Step 6: Final answer
    x = 14,747.78

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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.