Home / 31,980.85-47,966.95-8,608.69

Finding the Fourth Proportional to 31,980.85, 47,966.95 and 8,608.69

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Solution

The fourth proportional to 31,980.85, 47,966.95 and 8,608.69 is: 12,911.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,980.85 : 47,966.95 = 8,608.69 : x
  2. Step 2: Convert to fraction form
    31,980.85/47,966.95 = 8,608.69/x
  3. Step 3: Cross multiply
    31,980.85x = 47,966.95 × 8,608.69
  4. Step 4: Simplify right side
    31,980.85x = 412,932,602.80
  5. Step 5: Solve for x
    x = 412,932,602.80/31,980.85
  6. Step 6: Final answer
    x = 12,911.87

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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.