Home / 13,995.86-20,992.28-4,001.21

Finding the Fourth Proportional to 13,995.86, 20,992.28 and 4,001.21

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Solution

The fourth proportional to 13,995.86, 20,992.28 and 4,001.21 is: 6,001.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.86 : 20,992.28 = 4,001.21 : x
  2. Step 2: Convert to fraction form
    13,995.86/20,992.28 = 4,001.21/x
  3. Step 3: Cross multiply
    13,995.86x = 20,992.28 × 4,001.21
  4. Step 4: Simplify right side
    13,995.86x = 83,994,395.69
  5. Step 5: Solve for x
    x = 83,994,395.69/13,995.86
  6. Step 6: Final answer
    x = 6,001.37

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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.