Home / 13,994.33-20,972.86-5,220.41

Finding the Fourth Proportional to 13,994.33, 20,972.86 and 5,220.41

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Solution

The fourth proportional to 13,994.33, 20,972.86 and 5,220.41 is: 7,823.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.33 : 20,972.86 = 5,220.41 : x
  2. Step 2: Convert to fraction form
    13,994.33/20,972.86 = 5,220.41/x
  3. Step 3: Cross multiply
    13,994.33x = 20,972.86 × 5,220.41
  4. Step 4: Simplify right side
    13,994.33x = 109,486,810.16
  5. Step 5: Solve for x
    x = 109,486,810.16/13,994.33
  6. Step 6: Final answer
    x = 7,823.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.