Home / 22,308.89-30,786.28-12,877.45

Finding the Fourth Proportional to 22,308.89, 30,786.28 and 12,877.45

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Solution

The fourth proportional to 22,308.89, 30,786.28 and 12,877.45 is: 17,770.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,308.89 : 30,786.28 = 12,877.45 : x
  2. Step 2: Convert to fraction form
    22,308.89/30,786.28 = 12,877.45/x
  3. Step 3: Cross multiply
    22,308.89x = 30,786.28 × 12,877.45
  4. Step 4: Simplify right side
    22,308.89x = 396,448,672.23
  5. Step 5: Solve for x
    x = 396,448,672.23/22,308.89
  6. Step 6: Final answer
    x = 17,770.89

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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.