Home / 21,637.98-29,850-12,679.92

Finding the Fourth Proportional to 21,637.98, 29,850 and 12,679.92

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Solution

The fourth proportional to 21,637.98, 29,850 and 12,679.92 is: 17,492.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,637.98 : 29,850 = 12,679.92 : x
  2. Step 2: Convert to fraction form
    21,637.98/29,850 = 12,679.92/x
  3. Step 3: Cross multiply
    21,637.98x = 29,850 × 12,679.92
  4. Step 4: Simplify right side
    21,637.98x = 378,495,612
  5. Step 5: Solve for x
    x = 378,495,612/21,637.98
  6. Step 6: Final answer
    x = 17,492.19

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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.