Home / 20,516.25-30,777.65-8,670.14

Finding the Fourth Proportional to 20,516.25, 30,777.65 and 8,670.14

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Solution

The fourth proportional to 20,516.25, 30,777.65 and 8,670.14 is: 13,006.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.25 : 30,777.65 = 8,670.14 : x
  2. Step 2: Convert to fraction form
    20,516.25/30,777.65 = 8,670.14/x
  3. Step 3: Cross multiply
    20,516.25x = 30,777.65 × 8,670.14
  4. Step 4: Simplify right side
    20,516.25x = 266,846,337.13
  5. Step 5: Solve for x
    x = 266,846,337.13/20,516.25
  6. Step 6: Final answer
    x = 13,006.58

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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.