Home / 31,613.51-43,619.76-18,860.87

Finding the Fourth Proportional to 31,613.51, 43,619.76 and 18,860.87

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Solution

The fourth proportional to 31,613.51, 43,619.76 and 18,860.87 is: 26,023.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,613.51 : 43,619.76 = 18,860.87 : x
  2. Step 2: Convert to fraction form
    31,613.51/43,619.76 = 18,860.87/x
  3. Step 3: Cross multiply
    31,613.51x = 43,619.76 × 18,860.87
  4. Step 4: Simplify right side
    31,613.51x = 822,706,404.69
  5. Step 5: Solve for x
    x = 822,706,404.69/31,613.51
  6. Step 6: Final answer
    x = 26,023.89

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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.