Home / 33,981.40-50,971.84-13,990.76

Finding the Fourth Proportional to 33,981.40, 50,971.84 and 13,990.76

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Solution

The fourth proportional to 33,981.40, 50,971.84 and 13,990.76 is: 20,986.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,981.40 : 50,971.84 = 13,990.76 : x
  2. Step 2: Convert to fraction form
    33,981.40/50,971.84 = 13,990.76/x
  3. Step 3: Cross multiply
    33,981.40x = 50,971.84 × 13,990.76
  4. Step 4: Simplify right side
    33,981.40x = 713,134,780.20
  5. Step 5: Solve for x
    x = 713,134,780.20/33,981.40
  6. Step 6: Final answer
    x = 20,986.03

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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.