Home / 13,209.76-18,228.28-7,241.32

Finding the Fourth Proportional to 13,209.76, 18,228.28 and 7,241.32

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Solution

The fourth proportional to 13,209.76, 18,228.28 and 7,241.32 is: 9,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.76 : 18,228.28 = 7,241.32 : x
  2. Step 2: Convert to fraction form
    13,209.76/18,228.28 = 7,241.32/x
  3. Step 3: Cross multiply
    13,209.76x = 18,228.28 × 7,241.32
  4. Step 4: Simplify right side
    13,209.76x = 131,996,808.53
  5. Step 5: Solve for x
    x = 131,996,808.53/13,209.76
  6. Step 6: Final answer
    x = 9,992.37

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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.