Home / 20,742.65-28,618.02-11,786.89

Finding the Fourth Proportional to 20,742.65, 28,618.02 and 11,786.89

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Solution

The fourth proportional to 20,742.65, 28,618.02 and 11,786.89 is: 16,262.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.65 : 28,618.02 = 11,786.89 : x
  2. Step 2: Convert to fraction form
    20,742.65/28,618.02 = 11,786.89/x
  3. Step 3: Cross multiply
    20,742.65x = 28,618.02 × 11,786.89
  4. Step 4: Simplify right side
    20,742.65x = 337,317,382.21
  5. Step 5: Solve for x
    x = 337,317,382.21/20,742.65
  6. Step 6: Final answer
    x = 16,262.02

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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.