Home / 20,566.56-30,830.40-18,680.88

Finding the Fourth Proportional to 20,566.56, 30,830.40 and 18,680.88

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Solution

The fourth proportional to 20,566.56, 30,830.40 and 18,680.88 is: 28,003.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.56 : 30,830.40 = 18,680.88 : x
  2. Step 2: Convert to fraction form
    20,566.56/30,830.40 = 18,680.88/x
  3. Step 3: Cross multiply
    20,566.56x = 30,830.40 × 18,680.88
  4. Step 4: Simplify right side
    20,566.56x = 575,939,002.75
  5. Step 5: Solve for x
    x = 575,939,002.75/20,566.56
  6. Step 6: Final answer
    x = 28,003.66

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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.