Home / 13,620.72-20,434.74-4,858.14

Finding the Fourth Proportional to 13,620.72, 20,434.74 and 4,858.14

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Solution

The fourth proportional to 13,620.72, 20,434.74 and 4,858.14 is: 7,288.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.72 : 20,434.74 = 4,858.14 : x
  2. Step 2: Convert to fraction form
    13,620.72/20,434.74 = 4,858.14/x
  3. Step 3: Cross multiply
    13,620.72x = 20,434.74 × 4,858.14
  4. Step 4: Simplify right side
    13,620.72x = 99,274,827.78
  5. Step 5: Solve for x
    x = 99,274,827.78/13,620.72
  6. Step 6: Final answer
    x = 7,288.52

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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.