Home / 13,220.88-18,241.82-8,972.52

Finding the Fourth Proportional to 13,220.88, 18,241.82 and 8,972.52

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Solution

The fourth proportional to 13,220.88, 18,241.82 and 8,972.52 is: 12,380.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.88 : 18,241.82 = 8,972.52 : x
  2. Step 2: Convert to fraction form
    13,220.88/18,241.82 = 8,972.52/x
  3. Step 3: Cross multiply
    13,220.88x = 18,241.82 × 8,972.52
  4. Step 4: Simplify right side
    13,220.88x = 163,675,094.79
  5. Step 5: Solve for x
    x = 163,675,094.79/13,220.88
  6. Step 6: Final answer
    x = 12,380.05

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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.