Home / 20,720.58-28,593.36-11,766.93

Finding the Fourth Proportional to 20,720.58, 28,593.36 and 11,766.93

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Solution

The fourth proportional to 20,720.58, 28,593.36 and 11,766.93 is: 16,237.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.58 : 28,593.36 = 11,766.93 : x
  2. Step 2: Convert to fraction form
    20,720.58/28,593.36 = 11,766.93/x
  3. Step 3: Cross multiply
    20,720.58x = 28,593.36 × 11,766.93
  4. Step 4: Simplify right side
    20,720.58x = 336,456,065.58
  5. Step 5: Solve for x
    x = 336,456,065.58/20,720.58
  6. Step 6: Final answer
    x = 16,237.77

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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.