Home / 28,613.86-39,486.41-15,867.09

Finding the Fourth Proportional to 28,613.86, 39,486.41 and 15,867.09

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Solution

The fourth proportional to 28,613.86, 39,486.41 and 15,867.09 is: 21,896.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,613.86 : 39,486.41 = 15,867.09 : x
  2. Step 2: Convert to fraction form
    28,613.86/39,486.41 = 15,867.09/x
  3. Step 3: Cross multiply
    28,613.86x = 39,486.41 × 15,867.09
  4. Step 4: Simplify right side
    28,613.86x = 626,534,421.25
  5. Step 5: Solve for x
    x = 626,534,421.25/28,613.86
  6. Step 6: Final answer
    x = 21,896.19

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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.