Home / 18,370.31-25,351.04-9,986.81

Finding the Fourth Proportional to 18,370.31, 25,351.04 and 9,986.81

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Solution

The fourth proportional to 18,370.31, 25,351.04 and 9,986.81 is: 13,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,370.31 : 25,351.04 = 9,986.81 : x
  2. Step 2: Convert to fraction form
    18,370.31/25,351.04 = 9,986.81/x
  3. Step 3: Cross multiply
    18,370.31x = 25,351.04 × 9,986.81
  4. Step 4: Simplify right side
    18,370.31x = 253,175,917.99
  5. Step 5: Solve for x
    x = 253,175,917.99/18,370.31
  6. Step 6: Final answer
    x = 13,781.80

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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.