Home / 31,435.81-43,380.55-17,288.65

Finding the Fourth Proportional to 31,435.81, 43,380.55 and 17,288.65

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Solution

The fourth proportional to 31,435.81, 43,380.55 and 17,288.65 is: 23,857.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,435.81 : 43,380.55 = 17,288.65 : x
  2. Step 2: Convert to fraction form
    31,435.81/43,380.55 = 17,288.65/x
  3. Step 3: Cross multiply
    31,435.81x = 43,380.55 × 17,288.65
  4. Step 4: Simplify right side
    31,435.81x = 749,991,059.31
  5. Step 5: Solve for x
    x = 749,991,059.31/31,435.81
  6. Step 6: Final answer
    x = 23,857.86

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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.