Home / 20,935.41-31,403.12-7,786.06

Finding the Fourth Proportional to 20,935.41, 31,403.12 and 7,786.06

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Solution

The fourth proportional to 20,935.41, 31,403.12 and 7,786.06 is: 11,679.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.41 : 31,403.12 = 7,786.06 : x
  2. Step 2: Convert to fraction form
    20,935.41/31,403.12 = 7,786.06/x
  3. Step 3: Cross multiply
    20,935.41x = 31,403.12 × 7,786.06
  4. Step 4: Simplify right side
    20,935.41x = 244,506,537.58
  5. Step 5: Solve for x
    x = 244,506,537.58/20,935.41
  6. Step 6: Final answer
    x = 11,679.09

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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.