Home / 12,621.29-18,934.36-3,857.49

Finding the Fourth Proportional to 12,621.29, 18,934.36 and 3,857.49

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Solution

The fourth proportional to 12,621.29, 18,934.36 and 3,857.49 is: 5,786.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.29 : 18,934.36 = 3,857.49 : x
  2. Step 2: Convert to fraction form
    12,621.29/18,934.36 = 3,857.49/x
  3. Step 3: Cross multiply
    12,621.29x = 18,934.36 × 3,857.49
  4. Step 4: Simplify right side
    12,621.29x = 73,039,094.71
  5. Step 5: Solve for x
    x = 73,039,094.71/12,621.29
  6. Step 6: Final answer
    x = 5,786.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.