Home / 18,241.86-25,156.98-11,515.86

Finding the Fourth Proportional to 18,241.86, 25,156.98 and 11,515.86

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Solution

The fourth proportional to 18,241.86, 25,156.98 and 11,515.86 is: 15,881.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,241.86 : 25,156.98 = 11,515.86 : x
  2. Step 2: Convert to fraction form
    18,241.86/25,156.98 = 11,515.86/x
  3. Step 3: Cross multiply
    18,241.86x = 25,156.98 × 11,515.86
  4. Step 4: Simplify right side
    18,241.86x = 289,704,259.70
  5. Step 5: Solve for x
    x = 289,704,259.70/18,241.86
  6. Step 6: Final answer
    x = 15,881.29

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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.