Home / 13,820.58-20,712.33-7,571.16

Finding the Fourth Proportional to 13,820.58, 20,712.33 and 7,571.16

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Solution

The fourth proportional to 13,820.58, 20,712.33 and 7,571.16 is: 11,346.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.58 : 20,712.33 = 7,571.16 : x
  2. Step 2: Convert to fraction form
    13,820.58/20,712.33 = 7,571.16/x
  3. Step 3: Cross multiply
    13,820.58x = 20,712.33 × 7,571.16
  4. Step 4: Simplify right side
    13,820.58x = 156,816,364.40
  5. Step 5: Solve for x
    x = 156,816,364.40/13,820.58
  6. Step 6: Final answer
    x = 11,346.58

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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.