Home / 20,857.32-31,285.98-5,274.94

Finding the Fourth Proportional to 20,857.32, 31,285.98 and 5,274.94

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Solution

The fourth proportional to 20,857.32, 31,285.98 and 5,274.94 is: 7,912.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857.32 : 31,285.98 = 5,274.94 : x
  2. Step 2: Convert to fraction form
    20,857.32/31,285.98 = 5,274.94/x
  3. Step 3: Cross multiply
    20,857.32x = 31,285.98 × 5,274.94
  4. Step 4: Simplify right side
    20,857.32x = 165,031,667.34
  5. Step 5: Solve for x
    x = 165,031,667.34/20,857.32
  6. Step 6: Final answer
    x = 7,912.41

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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.