Home / 21,828.20-32,742.49-11,962.09

Finding the Fourth Proportional to 21,828.20, 32,742.49 and 11,962.09

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Solution

The fourth proportional to 21,828.20, 32,742.49 and 11,962.09 is: 17,943.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.20 : 32,742.49 = 11,962.09 : x
  2. Step 2: Convert to fraction form
    21,828.20/32,742.49 = 11,962.09/x
  3. Step 3: Cross multiply
    21,828.20x = 32,742.49 × 11,962.09
  4. Step 4: Simplify right side
    21,828.20x = 391,668,612.20
  5. Step 5: Solve for x
    x = 391,668,612.20/21,828.20
  6. Step 6: Final answer
    x = 17,943.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.