Home / 31,490.00-43,405.55-21,277.85

Finding the Fourth Proportional to 31,490.00, 43,405.55 and 21,277.85

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Solution

The fourth proportional to 31,490.00, 43,405.55 and 21,277.85 is: 29,329.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,490.00 : 43,405.55 = 21,277.85 : x
  2. Step 2: Convert to fraction form
    31,490.00/43,405.55 = 21,277.85/x
  3. Step 3: Cross multiply
    31,490.00x = 43,405.55 × 21,277.85
  4. Step 4: Simplify right side
    31,490.00x = 923,576,658.13
  5. Step 5: Solve for x
    x = 923,576,658.13/31,490.00
  6. Step 6: Final answer
    x = 29,329.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.