Home / 18,638.94-25,721.73-10,685.79

Finding the Fourth Proportional to 18,638.94, 25,721.73 and 10,685.79

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Solution

The fourth proportional to 18,638.94, 25,721.73 and 10,685.79 is: 14,746.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.94 : 25,721.73 = 10,685.79 : x
  2. Step 2: Convert to fraction form
    18,638.94/25,721.73 = 10,685.79/x
  3. Step 3: Cross multiply
    18,638.94x = 25,721.73 × 10,685.79
  4. Step 4: Simplify right side
    18,638.94x = 274,857,005.22
  5. Step 5: Solve for x
    x = 274,857,005.22/18,638.94
  6. Step 6: Final answer
    x = 14,746.39

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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.