Home / 13,972.20-20,962.82-4,111.53

Finding the Fourth Proportional to 13,972.20, 20,962.82 and 4,111.53

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Solution

The fourth proportional to 13,972.20, 20,962.82 and 4,111.53 is: 6,168.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.20 : 20,962.82 = 4,111.53 : x
  2. Step 2: Convert to fraction form
    13,972.20/20,962.82 = 4,111.53/x
  3. Step 3: Cross multiply
    13,972.20x = 20,962.82 × 4,111.53
  4. Step 4: Simplify right side
    13,972.20x = 86,189,263.31
  5. Step 5: Solve for x
    x = 86,189,263.31/13,972.20
  6. Step 6: Final answer
    x = 6,168.63

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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.