Home / 13,828.32-20,730.72-5,057.28

Finding the Fourth Proportional to 13,828.32, 20,730.72 and 5,057.28

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Solution

The fourth proportional to 13,828.32, 20,730.72 and 5,057.28 is: 7,581.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.32 : 20,730.72 = 5,057.28 : x
  2. Step 2: Convert to fraction form
    13,828.32/20,730.72 = 5,057.28/x
  3. Step 3: Cross multiply
    13,828.32x = 20,730.72 × 5,057.28
  4. Step 4: Simplify right side
    13,828.32x = 104,841,055.64
  5. Step 5: Solve for x
    x = 104,841,055.64/13,828.32
  6. Step 6: Final answer
    x = 7,581.62

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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.