Home / 20,518.38-30,764.76-8,666.06

Finding the Fourth Proportional to 20,518.38, 30,764.76 and 8,666.06

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Solution

The fourth proportional to 20,518.38, 30,764.76 and 8,666.06 is: 12,993.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518.38 : 30,764.76 = 8,666.06 : x
  2. Step 2: Convert to fraction form
    20,518.38/30,764.76 = 8,666.06/x
  3. Step 3: Cross multiply
    20,518.38x = 30,764.76 × 8,666.06
  4. Step 4: Simplify right side
    20,518.38x = 266,609,256.05
  5. Step 5: Solve for x
    x = 266,609,256.05/20,518.38
  6. Step 6: Final answer
    x = 12,993.68

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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.