Home / 12,578.29-17,358.30-6,913.55

Finding the Fourth Proportional to 12,578.29, 17,358.30 and 6,913.55

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Solution

The fourth proportional to 12,578.29, 17,358.30 and 6,913.55 is: 9,540.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.29 : 17,358.30 = 6,913.55 : x
  2. Step 2: Convert to fraction form
    12,578.29/17,358.30 = 6,913.55/x
  3. Step 3: Cross multiply
    12,578.29x = 17,358.30 × 6,913.55
  4. Step 4: Simplify right side
    12,578.29x = 120,007,518.36
  5. Step 5: Solve for x
    x = 120,007,518.36/12,578.29
  6. Step 6: Final answer
    x = 9,540.85

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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.