Home / 21,033.66-31,548.39-8,554.42

Finding the Fourth Proportional to 21,033.66, 31,548.39 and 8,554.42

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Solution

The fourth proportional to 21,033.66, 31,548.39 and 8,554.42 is: 12,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,033.66 : 31,548.39 = 8,554.42 : x
  2. Step 2: Convert to fraction form
    21,033.66/31,548.39 = 8,554.42/x
  3. Step 3: Cross multiply
    21,033.66x = 31,548.39 × 8,554.42
  4. Step 4: Simplify right side
    21,033.66x = 269,878,178.38
  5. Step 5: Solve for x
    x = 269,878,178.38/21,033.66
  6. Step 6: Final answer
    x = 12,830.78

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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.