Home / 21,881.16-30,199.50-12,452.76

Finding the Fourth Proportional to 21,881.16, 30,199.50 and 12,452.76

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Solution

The fourth proportional to 21,881.16, 30,199.50 and 12,452.76 is: 17,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,881.16 : 30,199.50 = 12,452.76 : x
  2. Step 2: Convert to fraction form
    21,881.16/30,199.50 = 12,452.76/x
  3. Step 3: Cross multiply
    21,881.16x = 30,199.50 × 12,452.76
  4. Step 4: Simplify right side
    21,881.16x = 376,067,125.62
  5. Step 5: Solve for x
    x = 376,067,125.62/21,881.16
  6. Step 6: Final answer
    x = 17,186.80

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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.