Home / 21,803.12-30,087.44-12,371.52

Finding the Fourth Proportional to 21,803.12, 30,087.44 and 12,371.52

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Solution

The fourth proportional to 21,803.12, 30,087.44 and 12,371.52 is: 17,072.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.12 : 30,087.44 = 12,371.52 : x
  2. Step 2: Convert to fraction form
    21,803.12/30,087.44 = 12,371.52/x
  3. Step 3: Cross multiply
    21,803.12x = 30,087.44 × 12,371.52
  4. Step 4: Simplify right side
    21,803.12x = 372,227,365.71
  5. Step 5: Solve for x
    x = 372,227,365.71/21,803.12
  6. Step 6: Final answer
    x = 17,072.21

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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.