Home / 18,678.79-25,776.39-10,180.99

Finding the Fourth Proportional to 18,678.79, 25,776.39 and 10,180.99

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Solution

The fourth proportional to 18,678.79, 25,776.39 and 10,180.99 is: 14,049.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.79 : 25,776.39 = 10,180.99 : x
  2. Step 2: Convert to fraction form
    18,678.79/25,776.39 = 10,180.99/x
  3. Step 3: Cross multiply
    18,678.79x = 25,776.39 × 10,180.99
  4. Step 4: Simplify right side
    18,678.79x = 262,429,039.94
  5. Step 5: Solve for x
    x = 262,429,039.94/18,678.79
  6. Step 6: Final answer
    x = 14,049.58

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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.