Home / 12,975.78-19,463.68-3,615.82

Finding the Fourth Proportional to 12,975.78, 19,463.68 and 3,615.82

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Solution

The fourth proportional to 12,975.78, 19,463.68 and 3,615.82 is: 5,423.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975.78 : 19,463.68 = 3,615.82 : x
  2. Step 2: Convert to fraction form
    12,975.78/19,463.68 = 3,615.82/x
  3. Step 3: Cross multiply
    12,975.78x = 19,463.68 × 3,615.82
  4. Step 4: Simplify right side
    12,975.78x = 70,377,223.68
  5. Step 5: Solve for x
    x = 70,377,223.68/12,975.78
  6. Step 6: Final answer
    x = 5,423.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.