Home / 32,890.20-49,335.30-21,080.40

Finding the Fourth Proportional to 32,890.20, 49,335.30 and 21,080.40

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Solution

The fourth proportional to 32,890.20, 49,335.30 and 21,080.40 is: 31,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,890.20 : 49,335.30 = 21,080.40 : x
  2. Step 2: Convert to fraction form
    32,890.20/49,335.30 = 21,080.40/x
  3. Step 3: Cross multiply
    32,890.20x = 49,335.30 × 21,080.40
  4. Step 4: Simplify right side
    32,890.20x = 1,040,007,858.12
  5. Step 5: Solve for x
    x = 1,040,007,858.12/32,890.20
  6. Step 6: Final answer
    x = 31,620.60

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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.