Home / 13,539.14-18,684.83-7,571.21

Finding the Fourth Proportional to 13,539.14, 18,684.83 and 7,571.21

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Solution

The fourth proportional to 13,539.14, 18,684.83 and 7,571.21 is: 10,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.14 : 18,684.83 = 7,571.21 : x
  2. Step 2: Convert to fraction form
    13,539.14/18,684.83 = 7,571.21/x
  3. Step 3: Cross multiply
    13,539.14x = 18,684.83 × 7,571.21
  4. Step 4: Simplify right side
    13,539.14x = 141,466,697.25
  5. Step 5: Solve for x
    x = 141,466,697.25/13,539.14
  6. Step 6: Final answer
    x = 10,448.72

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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.