Home / 31,618.13-43,637.40-18,189.14

Finding the Fourth Proportional to 31,618.13, 43,637.40 and 18,189.14

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Solution

The fourth proportional to 31,618.13, 43,637.40 and 18,189.14 is: 25,103.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,618.13 : 43,637.40 = 18,189.14 : x
  2. Step 2: Convert to fraction form
    31,618.13/43,637.40 = 18,189.14/x
  3. Step 3: Cross multiply
    31,618.13x = 43,637.40 × 18,189.14
  4. Step 4: Simplify right side
    31,618.13x = 793,726,559.65
  5. Step 5: Solve for x
    x = 793,726,559.65/31,618.13
  6. Step 6: Final answer
    x = 25,103.53

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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.