Home / 21,927.58-30,252.63-12,489.46

Finding the Fourth Proportional to 21,927.58, 30,252.63 and 12,489.46

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Solution

The fourth proportional to 21,927.58, 30,252.63 and 12,489.46 is: 17,231.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,927.58 : 30,252.63 = 12,489.46 : x
  2. Step 2: Convert to fraction form
    21,927.58/30,252.63 = 12,489.46/x
  3. Step 3: Cross multiply
    21,927.58x = 30,252.63 × 12,489.46
  4. Step 4: Simplify right side
    21,927.58x = 377,839,012.28
  5. Step 5: Solve for x
    x = 377,839,012.28/21,927.58
  6. Step 6: Final answer
    x = 17,231.22

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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.