Home / 22,140.20-33,210.30-21,218.60

Finding the Fourth Proportional to 22,140.20, 33,210.30 and 21,218.60

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Solution

The fourth proportional to 22,140.20, 33,210.30 and 21,218.60 is: 31,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,140.20 : 33,210.30 = 21,218.60 : x
  2. Step 2: Convert to fraction form
    22,140.20/33,210.30 = 21,218.60/x
  3. Step 3: Cross multiply
    22,140.20x = 33,210.30 × 21,218.60
  4. Step 4: Simplify right side
    22,140.20x = 704,676,071.58
  5. Step 5: Solve for x
    x = 704,676,071.58/22,140.20
  6. Step 6: Final answer
    x = 31,827.90

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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.