Home / 12,386.25-18,581.81-5,460.75

Finding the Fourth Proportional to 12,386.25, 18,581.81 and 5,460.75

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Solution

The fourth proportional to 12,386.25, 18,581.81 and 5,460.75 is: 8,192.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386.25 : 18,581.81 = 5,460.75 : x
  2. Step 2: Convert to fraction form
    12,386.25/18,581.81 = 5,460.75/x
  3. Step 3: Cross multiply
    12,386.25x = 18,581.81 × 5,460.75
  4. Step 4: Simplify right side
    12,386.25x = 101,470,591.65
  5. Step 5: Solve for x
    x = 101,470,591.65/12,386.25
  6. Step 6: Final answer
    x = 8,192.20

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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.