Home / 13,550.40-20,325.47-3,689.60

Finding the Fourth Proportional to 13,550.40, 20,325.47 and 3,689.60

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Solution

The fourth proportional to 13,550.40, 20,325.47 and 3,689.60 is: 5,534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.40 : 20,325.47 = 3,689.60 : x
  2. Step 2: Convert to fraction form
    13,550.40/20,325.47 = 3,689.60/x
  3. Step 3: Cross multiply
    13,550.40x = 20,325.47 × 3,689.60
  4. Step 4: Simplify right side
    13,550.40x = 74,992,734.04
  5. Step 5: Solve for x
    x = 74,992,734.04/13,550.40
  6. Step 6: Final answer
    x = 5,534.36

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1.5x scale

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.