Home / 31,317.54-43,218.35-18,742.29

Finding the Fourth Proportional to 31,317.54, 43,218.35 and 18,742.29

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Solution

The fourth proportional to 31,317.54, 43,218.35 and 18,742.29 is: 25,864.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,317.54 : 43,218.35 = 18,742.29 : x
  2. Step 2: Convert to fraction form
    31,317.54/43,218.35 = 18,742.29/x
  3. Step 3: Cross multiply
    31,317.54x = 43,218.35 × 18,742.29
  4. Step 4: Simplify right side
    31,317.54x = 810,010,849.02
  5. Step 5: Solve for x
    x = 810,010,849.02/31,317.54
  6. Step 6: Final answer
    x = 25,864.45

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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.