Home / 13,386.72-20,072.16-5,486.88

Finding the Fourth Proportional to 13,386.72, 20,072.16 and 5,486.88

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Solution

The fourth proportional to 13,386.72, 20,072.16 and 5,486.88 is: 8,227.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.72 : 20,072.16 = 5,486.88 : x
  2. Step 2: Convert to fraction form
    13,386.72/20,072.16 = 5,486.88/x
  3. Step 3: Cross multiply
    13,386.72x = 20,072.16 × 5,486.88
  4. Step 4: Simplify right side
    13,386.72x = 110,133,533.26
  5. Step 5: Solve for x
    x = 110,133,533.26/13,386.72
  6. Step 6: Final answer
    x = 8,227.07

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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.