Home / 20,951.88-31,456.98-10,570.92

Finding the Fourth Proportional to 20,951.88, 31,456.98 and 10,570.92

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Solution

The fourth proportional to 20,951.88, 31,456.98 and 10,570.92 is: 15,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951.88 : 31,456.98 = 10,570.92 : x
  2. Step 2: Convert to fraction form
    20,951.88/31,456.98 = 10,570.92/x
  3. Step 3: Cross multiply
    20,951.88x = 31,456.98 × 10,570.92
  4. Step 4: Simplify right side
    20,951.88x = 332,529,219.02
  5. Step 5: Solve for x
    x = 332,529,219.02/20,951.88
  6. Step 6: Final answer
    x = 15,871.09

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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.