Home / 31,537.40-43,520.90-17,390.28

Finding the Fourth Proportional to 31,537.40, 43,520.90 and 17,390.28

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Solution

The fourth proportional to 31,537.40, 43,520.90 and 17,390.28 is: 23,998.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,537.40 : 43,520.90 = 17,390.28 : x
  2. Step 2: Convert to fraction form
    31,537.40/43,520.90 = 17,390.28/x
  3. Step 3: Cross multiply
    31,537.40x = 43,520.90 × 17,390.28
  4. Step 4: Simplify right side
    31,537.40x = 756,840,636.85
  5. Step 5: Solve for x
    x = 756,840,636.85/31,537.40
  6. Step 6: Final answer
    x = 23,998.19

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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.