Home / 20,904.70-31,354.75-6,113.75

Finding the Fourth Proportional to 20,904.70, 31,354.75 and 6,113.75

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Solution

The fourth proportional to 20,904.70, 31,354.75 and 6,113.75 is: 9,169.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.70 : 31,354.75 = 6,113.75 : x
  2. Step 2: Convert to fraction form
    20,904.70/31,354.75 = 6,113.75/x
  3. Step 3: Cross multiply
    20,904.70x = 31,354.75 × 6,113.75
  4. Step 4: Simplify right side
    20,904.70x = 191,694,985.43
  5. Step 5: Solve for x
    x = 191,694,985.43/20,904.70
  6. Step 6: Final answer
    x = 9,169.95

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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.