Home / 21,651.84-29,886.32-12,702.96

Finding the Fourth Proportional to 21,651.84, 29,886.32 and 12,702.96

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Solution

The fourth proportional to 21,651.84, 29,886.32 and 12,702.96 is: 17,534.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,651.84 : 29,886.32 = 12,702.96 : x
  2. Step 2: Convert to fraction form
    21,651.84/29,886.32 = 12,702.96/x
  3. Step 3: Cross multiply
    21,651.84x = 29,886.32 × 12,702.96
  4. Step 4: Simplify right side
    21,651.84x = 379,644,727.51
  5. Step 5: Solve for x
    x = 379,644,727.51/21,651.84
  6. Step 6: Final answer
    x = 17,534.06

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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.