Home / 20,687.94-31,032.09-9,591.48

Finding the Fourth Proportional to 20,687.94, 31,032.09 and 9,591.48

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Solution

The fourth proportional to 20,687.94, 31,032.09 and 9,591.48 is: 14,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.94 : 31,032.09 = 9,591.48 : x
  2. Step 2: Convert to fraction form
    20,687.94/31,032.09 = 9,591.48/x
  3. Step 3: Cross multiply
    20,687.94x = 31,032.09 × 9,591.48
  4. Step 4: Simplify right side
    20,687.94x = 297,643,670.59
  5. Step 5: Solve for x
    x = 297,643,670.59/20,687.94
  6. Step 6: Final answer
    x = 14,387.30

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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.