Home / 20,710.58-28,579.70-11,757.92

Finding the Fourth Proportional to 20,710.58, 28,579.70 and 11,757.92

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Solution

The fourth proportional to 20,710.58, 28,579.70 and 11,757.92 is: 16,225.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.58 : 28,579.70 = 11,757.92 : x
  2. Step 2: Convert to fraction form
    20,710.58/28,579.70 = 11,757.92/x
  3. Step 3: Cross multiply
    20,710.58x = 28,579.70 × 11,757.92
  4. Step 4: Simplify right side
    20,710.58x = 336,037,826.22
  5. Step 5: Solve for x
    x = 336,037,826.22/20,710.58
  6. Step 6: Final answer
    x = 16,225.42

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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.