Home / 13,987.88-20,982.40-4,127.17

Finding the Fourth Proportional to 13,987.88, 20,982.40 and 4,127.17

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Solution

The fourth proportional to 13,987.88, 20,982.40 and 4,127.17 is: 6,190.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.88 : 20,982.40 = 4,127.17 : x
  2. Step 2: Convert to fraction form
    13,987.88/20,982.40 = 4,127.17/x
  3. Step 3: Cross multiply
    13,987.88x = 20,982.40 × 4,127.17
  4. Step 4: Simplify right side
    13,987.88x = 86,597,848.88
  5. Step 5: Solve for x
    x = 86,597,848.88/13,987.88
  6. Step 6: Final answer
    x = 6,190.92

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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.