Home / 57,431.39-86,147.06-17,991.59

Finding the Fourth Proportional to 57,431.39, 86,147.06 and 17,991.59

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Solution

The fourth proportional to 57,431.39, 86,147.06 and 17,991.59 is: 26,987.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,431.39 : 86,147.06 = 17,991.59 : x
  2. Step 2: Convert to fraction form
    57,431.39/86,147.06 = 17,991.59/x
  3. Step 3: Cross multiply
    57,431.39x = 86,147.06 × 17,991.59
  4. Step 4: Simplify right side
    57,431.39x = 1,549,922,062.53
  5. Step 5: Solve for x
    x = 1,549,922,062.53/57,431.39
  6. Step 6: Final answer
    x = 26,987.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.