Home / 20,734.49-28,612.52-11,780.75

Finding the Fourth Proportional to 20,734.49, 28,612.52 and 11,780.75

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Solution

The fourth proportional to 20,734.49, 28,612.52 and 11,780.75 is: 16,256.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.49 : 28,612.52 = 11,780.75 : x
  2. Step 2: Convert to fraction form
    20,734.49/28,612.52 = 11,780.75/x
  3. Step 3: Cross multiply
    20,734.49x = 28,612.52 × 11,780.75
  4. Step 4: Simplify right side
    20,734.49x = 337,076,944.99
  5. Step 5: Solve for x
    x = 337,076,944.99/20,734.49
  6. Step 6: Final answer
    x = 16,256.82

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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.