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Finding the Fourth Proportional to 21,807.58, 32,713.36 and 7,012.84

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Solution

The fourth proportional to 21,807.58, 32,713.36 and 7,012.84 is: 10,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,807.58 : 32,713.36 = 7,012.84 : x
  2. Step 2: Convert to fraction form
    21,807.58/32,713.36 = 7,012.84/x
  3. Step 3: Cross multiply
    21,807.58x = 32,713.36 × 7,012.84
  4. Step 4: Simplify right side
    21,807.58x = 229,413,559.54
  5. Step 5: Solve for x
    x = 229,413,559.54/21,807.58
  6. Step 6: Final answer
    x = 10,519.90

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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.