Home / 15,014.82-20,720.54-8,208.86

Finding the Fourth Proportional to 15,014.82, 20,720.54 and 8,208.86

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Solution

The fourth proportional to 15,014.82, 20,720.54 and 8,208.86 is: 11,328.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.82 : 20,720.54 = 8,208.86 : x
  2. Step 2: Convert to fraction form
    15,014.82/20,720.54 = 8,208.86/x
  3. Step 3: Cross multiply
    15,014.82x = 20,720.54 × 8,208.86
  4. Step 4: Simplify right side
    15,014.82x = 170,092,011.98
  5. Step 5: Solve for x
    x = 170,092,011.98/15,014.82
  6. Step 6: Final answer
    x = 11,328.28

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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.