Home / 21,266.91-29,348.35-12,314.89

Finding the Fourth Proportional to 21,266.91, 29,348.35 and 12,314.89

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Solution

The fourth proportional to 21,266.91, 29,348.35 and 12,314.89 is: 16,994.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266.91 : 29,348.35 = 12,314.89 : x
  2. Step 2: Convert to fraction form
    21,266.91/29,348.35 = 12,314.89/x
  3. Step 3: Cross multiply
    21,266.91x = 29,348.35 × 12,314.89
  4. Step 4: Simplify right side
    21,266.91x = 361,421,701.93
  5. Step 5: Solve for x
    x = 361,421,701.93/21,266.91
  6. Step 6: Final answer
    x = 16,994.56

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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.