Home / 21,992.90-30,349.82-12,432.62

Finding the Fourth Proportional to 21,992.90, 30,349.82 and 12,432.62

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Solution

The fourth proportional to 21,992.90, 30,349.82 and 12,432.62 is: 17,156.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.90 : 30,349.82 = 12,432.62 : x
  2. Step 2: Convert to fraction form
    21,992.90/30,349.82 = 12,432.62/x
  3. Step 3: Cross multiply
    21,992.90x = 30,349.82 × 12,432.62
  4. Step 4: Simplify right side
    21,992.90x = 377,327,886.08
  5. Step 5: Solve for x
    x = 377,327,886.08/21,992.90
  6. Step 6: Final answer
    x = 17,156.81

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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.