Home / 13,580.36-20,373.78-5,260.58

Finding the Fourth Proportional to 13,580.36, 20,373.78 and 5,260.58

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Solution

The fourth proportional to 13,580.36, 20,373.78 and 5,260.58 is: 7,892.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.36 : 20,373.78 = 5,260.58 : x
  2. Step 2: Convert to fraction form
    13,580.36/20,373.78 = 5,260.58/x
  3. Step 3: Cross multiply
    13,580.36x = 20,373.78 × 5,260.58
  4. Step 4: Simplify right side
    13,580.36x = 107,177,899.59
  5. Step 5: Solve for x
    x = 107,177,899.59/13,580.36
  6. Step 6: Final answer
    x = 7,892.13

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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.