Home / 10,620.38-15,931.19-3,225.08

Finding the Fourth Proportional to 10,620.38, 15,931.19 and 3,225.08

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Solution

The fourth proportional to 10,620.38, 15,931.19 and 3,225.08 is: 4,837.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.38 : 15,931.19 = 3,225.08 : x
  2. Step 2: Convert to fraction form
    10,620.38/15,931.19 = 3,225.08/x
  3. Step 3: Cross multiply
    10,620.38x = 15,931.19 × 3,225.08
  4. Step 4: Simplify right side
    10,620.38x = 51,379,362.25
  5. Step 5: Solve for x
    x = 51,379,362.25/10,620.38
  6. Step 6: Final answer
    x = 4,837.81

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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.