Home / 21,020.58-31,473.45-13,606.65

Finding the Fourth Proportional to 21,020.58, 31,473.45 and 13,606.65

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Solution

The fourth proportional to 21,020.58, 31,473.45 and 13,606.65 is: 20,372.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.58 : 31,473.45 = 13,606.65 : x
  2. Step 2: Convert to fraction form
    21,020.58/31,473.45 = 13,606.65/x
  3. Step 3: Cross multiply
    21,020.58x = 31,473.45 × 13,606.65
  4. Step 4: Simplify right side
    21,020.58x = 428,248,218.44
  5. Step 5: Solve for x
    x = 428,248,218.44/21,020.58
  6. Step 6: Final answer
    x = 20,372.81

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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.