Home / 12,578.28-17,361.66-10,077.84

Finding the Fourth Proportional to 12,578.28, 17,361.66 and 10,077.84

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Solution

The fourth proportional to 12,578.28, 17,361.66 and 10,077.84 is: 13,910.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.28 : 17,361.66 = 10,077.84 : x
  2. Step 2: Convert to fraction form
    12,578.28/17,361.66 = 10,077.84/x
  3. Step 3: Cross multiply
    12,578.28x = 17,361.66 × 10,077.84
  4. Step 4: Simplify right side
    12,578.28x = 174,968,031.61
  5. Step 5: Solve for x
    x = 174,968,031.61/12,578.28
  6. Step 6: Final answer
    x = 13,910.33

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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.