Home / 13,750.56-20,617.20-4,985.28

Finding the Fourth Proportional to 13,750.56, 20,617.20 and 4,985.28

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Solution

The fourth proportional to 13,750.56, 20,617.20 and 4,985.28 is: 7,474.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.56 : 20,617.20 = 4,985.28 : x
  2. Step 2: Convert to fraction form
    13,750.56/20,617.20 = 4,985.28/x
  3. Step 3: Cross multiply
    13,750.56x = 20,617.20 × 4,985.28
  4. Step 4: Simplify right side
    13,750.56x = 102,782,514.82
  5. Step 5: Solve for x
    x = 102,782,514.82/13,750.56
  6. Step 6: Final answer
    x = 7,474.79

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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.