Home / 20,910.64-28,859.16-12,526.96

Finding the Fourth Proportional to 20,910.64, 28,859.16 and 12,526.96

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Solution

The fourth proportional to 20,910.64, 28,859.16 and 12,526.96 is: 17,288.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.64 : 28,859.16 = 12,526.96 : x
  2. Step 2: Convert to fraction form
    20,910.64/28,859.16 = 12,526.96/x
  3. Step 3: Cross multiply
    20,910.64x = 28,859.16 × 12,526.96
  4. Step 4: Simplify right side
    20,910.64x = 361,517,542.95
  5. Step 5: Solve for x
    x = 361,517,542.95/20,910.64
  6. Step 6: Final answer
    x = 17,288.69

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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.