Home / 21,832.11-30,127.95-12,141.18

Finding the Fourth Proportional to 21,832.11, 30,127.95 and 12,141.18

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Solution

The fourth proportional to 21,832.11, 30,127.95 and 12,141.18 is: 16,754.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,832.11 : 30,127.95 = 12,141.18 : x
  2. Step 2: Convert to fraction form
    21,832.11/30,127.95 = 12,141.18/x
  3. Step 3: Cross multiply
    21,832.11x = 30,127.95 × 12,141.18
  4. Step 4: Simplify right side
    21,832.11x = 365,788,863.98
  5. Step 5: Solve for x
    x = 365,788,863.98/21,832.11
  6. Step 6: Final answer
    x = 16,754.63

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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.