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Finding the Fourth Proportional to 21,592.88, 29,798.21 and 12,642.14

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Solution

The fourth proportional to 21,592.88, 29,798.21 and 12,642.14 is: 17,446.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,592.88 : 29,798.21 = 12,642.14 : x
  2. Step 2: Convert to fraction form
    21,592.88/29,798.21 = 12,642.14/x
  3. Step 3: Cross multiply
    21,592.88x = 29,798.21 × 12,642.14
  4. Step 4: Simplify right side
    21,592.88x = 376,713,142.57
  5. Step 5: Solve for x
    x = 376,713,142.57/21,592.88
  6. Step 6: Final answer
    x = 17,446.17

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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.