Home / 21,713.18-29,965.29-12,284.78

Finding the Fourth Proportional to 21,713.18, 29,965.29 and 12,284.78

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Solution

The fourth proportional to 21,713.18, 29,965.29 and 12,284.78 is: 16,953.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,713.18 : 29,965.29 = 12,284.78 : x
  2. Step 2: Convert to fraction form
    21,713.18/29,965.29 = 12,284.78/x
  3. Step 3: Cross multiply
    21,713.18x = 29,965.29 × 12,284.78
  4. Step 4: Simplify right side
    21,713.18x = 368,116,995.29
  5. Step 5: Solve for x
    x = 368,116,995.29/21,713.18
  6. Step 6: Final answer
    x = 16,953.62

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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.