Home / 21,195.86-31,799.55-7,345.94

Finding the Fourth Proportional to 21,195.86, 31,799.55 and 7,345.94

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Solution

The fourth proportional to 21,195.86, 31,799.55 and 7,345.94 is: 11,020.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.86 : 31,799.55 = 7,345.94 : x
  2. Step 2: Convert to fraction form
    21,195.86/31,799.55 = 7,345.94/x
  3. Step 3: Cross multiply
    21,195.86x = 31,799.55 × 7,345.94
  4. Step 4: Simplify right side
    21,195.86x = 233,597,586.33
  5. Step 5: Solve for x
    x = 233,597,586.33/21,195.86
  6. Step 6: Final answer
    x = 11,020.91

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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.