Home / 20,933.70-31,404.60-6,143.10

Finding the Fourth Proportional to 20,933.70, 31,404.60 and 6,143.10

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Solution

The fourth proportional to 20,933.70, 31,404.60 and 6,143.10 is: 9,215.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.70 : 31,404.60 = 6,143.10 : x
  2. Step 2: Convert to fraction form
    20,933.70/31,404.60 = 6,143.10/x
  3. Step 3: Cross multiply
    20,933.70x = 31,404.60 × 6,143.10
  4. Step 4: Simplify right side
    20,933.70x = 192,921,598.26
  5. Step 5: Solve for x
    x = 192,921,598.26/20,933.70
  6. Step 6: Final answer
    x = 9,215.84

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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.