Home / 13,542.21-20,262.15-7,998.57

Finding the Fourth Proportional to 13,542.21, 20,262.15 and 7,998.57

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Solution

The fourth proportional to 13,542.21, 20,262.15 and 7,998.57 is: 11,967.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,542.21 : 20,262.15 = 7,998.57 : x
  2. Step 2: Convert to fraction form
    13,542.21/20,262.15 = 7,998.57/x
  3. Step 3: Cross multiply
    13,542.21x = 20,262.15 × 7,998.57
  4. Step 4: Simplify right side
    13,542.21x = 162,068,225.13
  5. Step 5: Solve for x
    x = 162,068,225.13/13,542.21
  6. Step 6: Final answer
    x = 11,967.63

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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.