Home / 21,193.38-31,786.47-5,612.58

Finding the Fourth Proportional to 21,193.38, 31,786.47 and 5,612.58

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Solution

The fourth proportional to 21,193.38, 31,786.47 and 5,612.58 is: 8,417.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.38 : 31,786.47 = 5,612.58 : x
  2. Step 2: Convert to fraction form
    21,193.38/31,786.47 = 5,612.58/x
  3. Step 3: Cross multiply
    21,193.38x = 31,786.47 × 5,612.58
  4. Step 4: Simplify right side
    21,193.38x = 178,404,105.79
  5. Step 5: Solve for x
    x = 178,404,105.79/21,193.38
  6. Step 6: Final answer
    x = 8,417.92

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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.