Home / 10,420.80-15,633.60-3,025.36

Finding the Fourth Proportional to 10,420.80, 15,633.60 and 3,025.36

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Solution

The fourth proportional to 10,420.80, 15,633.60 and 3,025.36 is: 4,538.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.80 : 15,633.60 = 3,025.36 : x
  2. Step 2: Convert to fraction form
    10,420.80/15,633.60 = 3,025.36/x
  3. Step 3: Cross multiply
    10,420.80x = 15,633.60 × 3,025.36
  4. Step 4: Simplify right side
    10,420.80x = 47,297,268.10
  5. Step 5: Solve for x
    x = 47,297,268.10/10,420.80
  6. Step 6: Final answer
    x = 4,538.74

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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.