Home / 20,670.30-28,525.29-11,717.58

Finding the Fourth Proportional to 20,670.30, 28,525.29 and 11,717.58

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Solution

The fourth proportional to 20,670.30, 28,525.29 and 11,717.58 is: 16,170.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.30 : 28,525.29 = 11,717.58 : x
  2. Step 2: Convert to fraction form
    20,670.30/28,525.29 = 11,717.58/x
  3. Step 3: Cross multiply
    20,670.30x = 28,525.29 × 11,717.58
  4. Step 4: Simplify right side
    20,670.30x = 334,247,367.60
  5. Step 5: Solve for x
    x = 334,247,367.60/20,670.30
  6. Step 6: Final answer
    x = 16,170.42

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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.