Home / 21,907.53-30,231.72-12,954.96

Finding the Fourth Proportional to 21,907.53, 30,231.72 and 12,954.96

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Solution

The fourth proportional to 21,907.53, 30,231.72 and 12,954.96 is: 17,877.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,907.53 : 30,231.72 = 12,954.96 : x
  2. Step 2: Convert to fraction form
    21,907.53/30,231.72 = 12,954.96/x
  3. Step 3: Cross multiply
    21,907.53x = 30,231.72 × 12,954.96
  4. Step 4: Simplify right side
    21,907.53x = 391,650,723.33
  5. Step 5: Solve for x
    x = 391,650,723.33/21,907.53
  6. Step 6: Final answer
    x = 17,877.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.