Home / 21,771.59-30,044.06-12,819.62

Finding the Fourth Proportional to 21,771.59, 30,044.06 and 12,819.62

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Solution

The fourth proportional to 21,771.59, 30,044.06 and 12,819.62 is: 17,690.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.59 : 30,044.06 = 12,819.62 : x
  2. Step 2: Convert to fraction form
    21,771.59/30,044.06 = 12,819.62/x
  3. Step 3: Cross multiply
    21,771.59x = 30,044.06 × 12,819.62
  4. Step 4: Simplify right side
    21,771.59x = 385,153,394.66
  5. Step 5: Solve for x
    x = 385,153,394.66/21,771.59
  6. Step 6: Final answer
    x = 17,690.65

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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.