Home / 13,997.12-20,987.60-6,962.82

Finding the Fourth Proportional to 13,997.12, 20,987.60 and 6,962.82

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Solution

The fourth proportional to 13,997.12, 20,987.60 and 6,962.82 is: 10,440.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.12 : 20,987.60 = 6,962.82 : x
  2. Step 2: Convert to fraction form
    13,997.12/20,987.60 = 6,962.82/x
  3. Step 3: Cross multiply
    13,997.12x = 20,987.60 × 6,962.82
  4. Step 4: Simplify right side
    13,997.12x = 146,132,881.03
  5. Step 5: Solve for x
    x = 146,132,881.03/13,997.12
  6. Step 6: Final answer
    x = 10,440.21

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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.