Home / 20,560.56-30,821.40-18,674.88

Finding the Fourth Proportional to 20,560.56, 30,821.40 and 18,674.88

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Solution

The fourth proportional to 20,560.56, 30,821.40 and 18,674.88 is: 27,994.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.56 : 30,821.40 = 18,674.88 : x
  2. Step 2: Convert to fraction form
    20,560.56/30,821.40 = 18,674.88/x
  3. Step 3: Cross multiply
    20,560.56x = 30,821.40 × 18,674.88
  4. Step 4: Simplify right side
    20,560.56x = 575,585,946.43
  5. Step 5: Solve for x
    x = 575,585,946.43/20,560.56
  6. Step 6: Final answer
    x = 27,994.66

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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.