Home / 20,914.32-28,861.86-11,482.88

Finding the Fourth Proportional to 20,914.32, 28,861.86 and 11,482.88

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Solution

The fourth proportional to 20,914.32, 28,861.86 and 11,482.88 is: 15,846.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.32 : 28,861.86 = 11,482.88 : x
  2. Step 2: Convert to fraction form
    20,914.32/28,861.86 = 11,482.88/x
  3. Step 3: Cross multiply
    20,914.32x = 28,861.86 × 11,482.88
  4. Step 4: Simplify right side
    20,914.32x = 331,417,130.65
  5. Step 5: Solve for x
    x = 331,417,130.65/20,914.32
  6. Step 6: Final answer
    x = 15,846.42

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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.