Home / 22,781.45-31,421.43-16,729.80

Finding the Fourth Proportional to 22,781.45, 31,421.43 and 16,729.80

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Solution

The fourth proportional to 22,781.45, 31,421.43 and 16,729.80 is: 23,074.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,781.45 : 31,421.43 = 16,729.80 : x
  2. Step 2: Convert to fraction form
    22,781.45/31,421.43 = 16,729.80/x
  3. Step 3: Cross multiply
    22,781.45x = 31,421.43 × 16,729.80
  4. Step 4: Simplify right side
    22,781.45x = 525,674,239.61
  5. Step 5: Solve for x
    x = 525,674,239.61/22,781.45
  6. Step 6: Final answer
    x = 23,074.66

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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.