Home / 21,734.01-29,992.95-12,781.62

Finding the Fourth Proportional to 21,734.01, 29,992.95 and 12,781.62

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Solution

The fourth proportional to 21,734.01, 29,992.95 and 12,781.62 is: 17,638.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,734.01 : 29,992.95 = 12,781.62 : x
  2. Step 2: Convert to fraction form
    21,734.01/29,992.95 = 12,781.62/x
  3. Step 3: Cross multiply
    21,734.01x = 29,992.95 × 12,781.62
  4. Step 4: Simplify right side
    21,734.01x = 383,358,489.58
  5. Step 5: Solve for x
    x = 383,358,489.58/21,734.01
  6. Step 6: Final answer
    x = 17,638.65

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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.