Home / 21,771.06-30,042.53-12,210.22

Finding the Fourth Proportional to 21,771.06, 30,042.53 and 12,210.22

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Solution

The fourth proportional to 21,771.06, 30,042.53 and 12,210.22 is: 16,849.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.06 : 30,042.53 = 12,210.22 : x
  2. Step 2: Convert to fraction form
    21,771.06/30,042.53 = 12,210.22/x
  3. Step 3: Cross multiply
    21,771.06x = 30,042.53 × 12,210.22
  4. Step 4: Simplify right side
    21,771.06x = 366,825,839.61
  5. Step 5: Solve for x
    x = 366,825,839.61/21,771.06
  6. Step 6: Final answer
    x = 16,849.25

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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.