Home / 20,890.32-31,335.48-7,049.04

Finding the Fourth Proportional to 20,890.32, 31,335.48 and 7,049.04

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Solution

The fourth proportional to 20,890.32, 31,335.48 and 7,049.04 is: 10,573.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890.32 : 31,335.48 = 7,049.04 : x
  2. Step 2: Convert to fraction form
    20,890.32/31,335.48 = 7,049.04/x
  3. Step 3: Cross multiply
    20,890.32x = 31,335.48 × 7,049.04
  4. Step 4: Simplify right side
    20,890.32x = 220,885,051.94
  5. Step 5: Solve for x
    x = 220,885,051.94/20,890.32
  6. Step 6: Final answer
    x = 10,573.56

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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.