Home / 13,455.21-20,158.45-7,524.99

Finding the Fourth Proportional to 13,455.21, 20,158.45 and 7,524.99

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Solution

The fourth proportional to 13,455.21, 20,158.45 and 7,524.99 is: 11,273.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.21 : 20,158.45 = 7,524.99 : x
  2. Step 2: Convert to fraction form
    13,455.21/20,158.45 = 7,524.99/x
  3. Step 3: Cross multiply
    13,455.21x = 20,158.45 × 7,524.99
  4. Step 4: Simplify right side
    13,455.21x = 151,692,134.67
  5. Step 5: Solve for x
    x = 151,692,134.67/13,455.21
  6. Step 6: Final answer
    x = 11,273.86

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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.