Home / 13,325.64-18,390.27-7,662.21

Finding the Fourth Proportional to 13,325.64, 18,390.27 and 7,662.21

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Solution

The fourth proportional to 13,325.64, 18,390.27 and 7,662.21 is: 10,574.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.64 : 18,390.27 = 7,662.21 : x
  2. Step 2: Convert to fraction form
    13,325.64/18,390.27 = 7,662.21/x
  3. Step 3: Cross multiply
    13,325.64x = 18,390.27 × 7,662.21
  4. Step 4: Simplify right side
    13,325.64x = 140,910,110.70
  5. Step 5: Solve for x
    x = 140,910,110.70/13,325.64
  6. Step 6: Final answer
    x = 10,574.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.