Home / 21,771.07-30,044.42-12,213.08

Finding the Fourth Proportional to 21,771.07, 30,044.42 and 12,213.08

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Solution

The fourth proportional to 21,771.07, 30,044.42 and 12,213.08 is: 16,854.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.07 : 30,044.42 = 12,213.08 : x
  2. Step 2: Convert to fraction form
    21,771.07/30,044.42 = 12,213.08/x
  3. Step 3: Cross multiply
    21,771.07x = 30,044.42 × 12,213.08
  4. Step 4: Simplify right side
    21,771.07x = 366,935,089.89
  5. Step 5: Solve for x
    x = 366,935,089.89/21,771.07
  6. Step 6: Final answer
    x = 16,854.25

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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.