Home / 21,335.80-32,007.83-8,187.15

Finding the Fourth Proportional to 21,335.80, 32,007.83 and 8,187.15

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Solution

The fourth proportional to 21,335.80, 32,007.83 and 8,187.15 is: 12,282.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.80 : 32,007.83 = 8,187.15 : x
  2. Step 2: Convert to fraction form
    21,335.80/32,007.83 = 8,187.15/x
  3. Step 3: Cross multiply
    21,335.80x = 32,007.83 × 8,187.15
  4. Step 4: Simplify right side
    21,335.80x = 262,052,905.38
  5. Step 5: Solve for x
    x = 262,052,905.38/21,335.80
  6. Step 6: Final answer
    x = 12,282.31

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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.