Home / 13,490.38-20,223.24-4,720.51

Finding the Fourth Proportional to 13,490.38, 20,223.24 and 4,720.51

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Solution

The fourth proportional to 13,490.38, 20,223.24 and 4,720.51 is: 7,076.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.38 : 20,223.24 = 4,720.51 : x
  2. Step 2: Convert to fraction form
    13,490.38/20,223.24 = 4,720.51/x
  3. Step 3: Cross multiply
    13,490.38x = 20,223.24 × 4,720.51
  4. Step 4: Simplify right side
    13,490.38x = 95,463,956.09
  5. Step 5: Solve for x
    x = 95,463,956.09/13,490.38
  6. Step 6: Final answer
    x = 7,076.45

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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.