Home / 20,663.75-28,513.98-11,589.48

Finding the Fourth Proportional to 20,663.75, 28,513.98 and 11,589.48

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Solution

The fourth proportional to 20,663.75, 28,513.98 and 11,589.48 is: 15,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.75 : 28,513.98 = 11,589.48 : x
  2. Step 2: Convert to fraction form
    20,663.75/28,513.98 = 11,589.48/x
  3. Step 3: Cross multiply
    20,663.75x = 28,513.98 × 11,589.48
  4. Step 4: Simplify right side
    20,663.75x = 330,462,200.93
  5. Step 5: Solve for x
    x = 330,462,200.93/20,663.75
  6. Step 6: Final answer
    x = 15,992.37

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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.