Home / 20,577.58-30,866.40-4,995.20

Finding the Fourth Proportional to 20,577.58, 30,866.40 and 4,995.20

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Solution

The fourth proportional to 20,577.58, 30,866.40 and 4,995.20 is: 7,492.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.58 : 30,866.40 = 4,995.20 : x
  2. Step 2: Convert to fraction form
    20,577.58/30,866.40 = 4,995.20/x
  3. Step 3: Cross multiply
    20,577.58x = 30,866.40 × 4,995.20
  4. Step 4: Simplify right side
    20,577.58x = 154,183,918.45
  5. Step 5: Solve for x
    x = 154,183,918.45/20,577.58
  6. Step 6: Final answer
    x = 7,492.81

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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.