Home / 31,185.04-43,020.96-18,605.20

Finding the Fourth Proportional to 31,185.04, 43,020.96 and 18,605.20

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Solution

The fourth proportional to 31,185.04, 43,020.96 and 18,605.20 is: 25,666.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,185.04 : 43,020.96 = 18,605.20 : x
  2. Step 2: Convert to fraction form
    31,185.04/43,020.96 = 18,605.20/x
  3. Step 3: Cross multiply
    31,185.04x = 43,020.96 × 18,605.20
  4. Step 4: Simplify right side
    31,185.04x = 800,413,564.99
  5. Step 5: Solve for x
    x = 800,413,564.99/31,185.04
  6. Step 6: Final answer
    x = 25,666.59

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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.