Home / 12,578.05-17,360.21-7,274.57

Finding the Fourth Proportional to 12,578.05, 17,360.21 and 7,274.57

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Solution

The fourth proportional to 12,578.05, 17,360.21 and 7,274.57 is: 10,040.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.05 : 17,360.21 = 7,274.57 : x
  2. Step 2: Convert to fraction form
    12,578.05/17,360.21 = 7,274.57/x
  3. Step 3: Cross multiply
    12,578.05x = 17,360.21 × 7,274.57
  4. Step 4: Simplify right side
    12,578.05x = 126,288,026.49
  5. Step 5: Solve for x
    x = 126,288,026.49/12,578.05
  6. Step 6: Final answer
    x = 10,040.35

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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.