Home / 30,912.50-42,628.20-27,498.90

Finding the Fourth Proportional to 30,912.50, 42,628.20 and 27,498.90

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Solution

The fourth proportional to 30,912.50, 42,628.20 and 27,498.90 is: 37,920.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.50 : 42,628.20 = 27,498.90 : x
  2. Step 2: Convert to fraction form
    30,912.50/42,628.20 = 27,498.90/x
  3. Step 3: Cross multiply
    30,912.50x = 42,628.20 × 27,498.90
  4. Step 4: Simplify right side
    30,912.50x = 1,172,228,608.98
  5. Step 5: Solve for x
    x = 1,172,228,608.98/30,912.50
  6. Step 6: Final answer
    x = 37,920.86

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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.