Home / 31,578.14-47,363.55-8,206.40

Finding the Fourth Proportional to 31,578.14, 47,363.55 and 8,206.40

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Solution

The fourth proportional to 31,578.14, 47,363.55 and 8,206.40 is: 12,308.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,578.14 : 47,363.55 = 8,206.40 : x
  2. Step 2: Convert to fraction form
    31,578.14/47,363.55 = 8,206.40/x
  3. Step 3: Cross multiply
    31,578.14x = 47,363.55 × 8,206.40
  4. Step 4: Simplify right side
    31,578.14x = 388,683,999.90
  5. Step 5: Solve for x
    x = 388,683,999.90/31,578.14
  6. Step 6: Final answer
    x = 12,308.64

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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.