Home / 21,272.04-31,907.88-12,954.42

Finding the Fourth Proportional to 21,272.04, 31,907.88 and 12,954.42

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Solution

The fourth proportional to 21,272.04, 31,907.88 and 12,954.42 is: 19,431.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.04 : 31,907.88 = 12,954.42 : x
  2. Step 2: Convert to fraction form
    21,272.04/31,907.88 = 12,954.42/x
  3. Step 3: Cross multiply
    21,272.04x = 31,907.88 × 12,954.42
  4. Step 4: Simplify right side
    21,272.04x = 413,348,078.83
  5. Step 5: Solve for x
    x = 413,348,078.83/21,272.04
  6. Step 6: Final answer
    x = 19,431.52

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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.