Home / 20,833.96-31,252.40-7,687.24

Finding the Fourth Proportional to 20,833.96, 31,252.40 and 7,687.24

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Solution

The fourth proportional to 20,833.96, 31,252.40 and 7,687.24 is: 11,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.96 : 31,252.40 = 7,687.24 : x
  2. Step 2: Convert to fraction form
    20,833.96/31,252.40 = 7,687.24/x
  3. Step 3: Cross multiply
    20,833.96x = 31,252.40 × 7,687.24
  4. Step 4: Simplify right side
    20,833.96x = 240,244,699.38
  5. Step 5: Solve for x
    x = 240,244,699.38/20,833.96
  6. Step 6: Final answer
    x = 11,531.40

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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.